Log in

Relevant bibliographies by topics / Melting and crystallization temperature / Journal articles

To see the other types of publications on this topic, follow the link: Melting and crystallization temperature.

Journal articles on the topic 'Melting and crystallization temperature'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Melting and crystallization temperature.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Xia, Hong-Xia, Yan-Hua Cai, Jun Wang, Hao Huang, and Li-Sha Zhao. "The Application of N, N -bis(Isonicotinic Acid) 1, 4-Naphthalenedicarboxylic Acid Dihydrazide in Biodegradable Poly(L-lactide): Crystalline Nucleation, Melting Behavior, Thermal Stability and Mechanical Properties." Materiale Plastice 59, no. 3 (2022): 232–44. http://dx.doi.org/10.37358/mp.22.3.5617.

Full text

Abstract:

Improving the crystallization performance of poly(L-lactide) (PLLA) is necessary to adapt for various applications. In the current work, N, N -bis(isonicotinic acid) 1, 4-naphthalenedicarboxylic acid dihydrazide (NAIAH) was synthesized to be firstly aimed at promoting the crystallization of PLLA, and the NAIAH-nucleated PLLA materials were prepared using PLLA as a matrix material and NAIAH as a nucleating agent, and the crystalline nucleation, melting behavior, thermal decomposition and mechanical properties of PLLA/NAIAH samples were investigated by the relevant testing instruments. The resul

APA, Harvard, Vancouver, ISO, and other styles

2

Zhao, Li-Sha, Jun Qiao, Wei Chen, and Yan-hua Cai. "Thermal and mechanical properties of poly(L-lactic acid) nucleated with N,N’-bis(phenyl) 1,4-naphthalenedicarboxylic acid dihydrazide." Polimery 66, no. 4 (2021): 234–44. http://dx.doi.org/10.14314/polimery.2021.4.3.

Full text

Abstract:

The modified poly(L-lactic acid) (PLLA) with different contents (0.5−3 wt %) of N,N’-bis(phenyl) 1,4-naphthalenedicarboxylic acid dihydrazide (NAPH) were prepared to evaluate effects of NAPH on melt-crystallization behavior (DSC), thermal degradation (TGA) and mechanical properties of PLLA. The melt-crystallization results demonstrated that NAPH as a heterogeneous organic nucleating agent enhanced crystallization ability of PLLA in cooling, and PLLA/1%NAPH had the best crystallization ability because of the highest onset crystallization temperature and the sharpest melt-crystallization peak. H

APA, Harvard, Vancouver, ISO, and other styles

3

Li, Xiaofan, Xiaohu Zhang, Huan Ji, et al. "The Crystallization and Melting Behavior of Neodymium-Based Butadiene Rubber Blends." Polymers 16, no. 3 (2024): 342. http://dx.doi.org/10.3390/polym16030342.

Full text

Abstract:

This study investigates the influence of poly(butadiene-isoprene) copolymer rubber (BIR) and TDAE oil on the crystallization and melting behavior of neodymium-based butadiene rubber (Nd-BR). The study demonstrates that the melting points of Nd-BR and its blends decrease with lower crystallization temperatures. Below the critical crystallization temperature (Tc,c), the melting behavior shows dual peaks in distinct temperature ranges, which are attributed to different spherulitic sizes. The addition of BIR or TDAE oil lowers the Tc,c, with TDAE oil exerting a more substantial effect. These dilue

APA, Harvard, Vancouver, ISO, and other styles

4

Liu, Chen, Kang Zheng, Xia Yin Yao, et al. "The Melting and Recrystallization Behavior of Poly(ethylene Terephthalate)/SiO₂ Nanocomposites Studied by Step-Scan DSC." Advanced Materials Research 87-88 (December 2009): 69–73. http://dx.doi.org/10.4028/www.scientific.net/amr.87-88.69.

Full text

Abstract:

The melting and recrystallization behavior of Poly(ethylene terephthalate) (PET)/SiO2 nanocomposites after isothermal crystallization from the melt was studied by Step-scan differential scanning calorimetry (SDSC). The influence of SiO2 contents, crystallization temperature and crystallization time on the melting process were examined. Two melting endotherms(in the SDSC CP.A curves, reversible part) and one recrystallization exotherm (in the SDSC CP.IsoK curves, irreversible part)of PET/SiO2 nanocomposites after isothermal crystallization were observed during the melt process. This ascribes to

APA, Harvard, Vancouver, ISO, and other styles

5

Poletaev, Gennady M., Yury Y. Gafner, Svetlana L. Gafner, and Viktor V. Kovalenko. "Study of the influence of various factors on the melting and crystallization processes of nickel nanoparticles using molecular dynamics simulation." Himičeskaâ fizika i mezoskopiâ 27, no. 2 (2025): 225–33. https://doi.org/10.62669/17270227.2025.2.22.

Full text

Abstract:

Using molecular dynamics modeling, the influence of various factors on the melting and crystallization processes of nickel nanoparticles was studied. The effect of the nanoparticle size, the rate of the temperature change during heating or cooling, the presence of structural defects in the nanoparticles and the impurity atoms of carbon and hydrogen were considered. It was demonstrated that the stability range of the solid phase, as well as the melting and crystallization temperatures of metallic nanoparticles, can be controlled by several methods, including varying the nanoparticle size, the d

APA, Harvard, Vancouver, ISO, and other styles

6

Liu, Chen, Xiang Hui Lu, Xue Qi, and Peng Li. "The Melting Behavior of Poly(Ethylene Terephthalate)/ Attapulgite Nanocomposites." Advanced Materials Research 773 (September 2013): 530–33. http://dx.doi.org/10.4028/www.scientific.net/amr.773.530.

Full text

Abstract:

The melting and recrystallization behavior of Poly(ethylene terephthalate) (PET)/ Attapulgite(At)nanocomposites after isothermal crystallization from the melt was studied by Step-scan differential scanning calorimetry (SDSC). The influence of At contents, crystallization temperature and crystallization time on the melting process were examined. Two melting endotherms(in the SDSC CP.A curves, reversible part) and one recrystallization exotherm (in the SDSC CP.IsoK curves, irreversible part)of PET/At nanocomposites after isothermal crystallization were observed during the melt process. This ascr

APA, Harvard, Vancouver, ISO, and other styles

7

Li Sha Zhao and Yan Hua Cai, Li Sha Zhao and Yan Hua Cai. "A 1H-Benzotriazole Derivative Nucleated Poly(L-lactic acid): Thermal Behavior and Physical Properties." Journal of the chemical society of pakistan 42, no. 3 (2020): 383. http://dx.doi.org/10.52568/000648.

Full text

Abstract:

In this study, a 1H-benzotriazole derivative, N, Nand#39;-bis(1H-benzotriazole) succinic acid acethydrazide (SABHA), was synthesized to nucleate Poly(L-lactic acid) (PLLA). A series of comparative studies on the melt-crystallization, the cold-crystallization, the melting behavior, the thermal stability, as well as the fluidity between the pure PLLA and PLLA/SABHA were performed. The melt-crystallization behavior revealed that the SABHA as a heterogeneous nucleating agent could significantly facilitate the crystallization of PLLA, and a larger amount of SABHA concentration exhibited the better

APA, Harvard, Vancouver, ISO, and other styles

8

Li Sha Zhao and Yan Hua Cai, Li Sha Zhao and Yan Hua Cai. "A 1H-Benzotriazole Derivative Nucleated Poly(L-lactic acid): Thermal Behavior and Physical Properties." Journal of the chemical society of pakistan 42, no. 3 (2020): 383. http://dx.doi.org/10.52568/000648/jcsp/42.03.2020.

Full text

Abstract:

In this study, a 1H-benzotriazole derivative, N, Nand#39;-bis(1H-benzotriazole) succinic acid acethydrazide (SABHA), was synthesized to nucleate Poly(L-lactic acid) (PLLA). A series of comparative studies on the melt-crystallization, the cold-crystallization, the melting behavior, the thermal stability, as well as the fluidity between the pure PLLA and PLLA/SABHA were performed. The melt-crystallization behavior revealed that the SABHA as a heterogeneous nucleating agent could significantly facilitate the crystallization of PLLA, and a larger amount of SABHA concentration exhibited the better

APA, Harvard, Vancouver, ISO, and other styles

9

Nasr, Ahmed, and Petr Svoboda. "Influence of Fusion Temperature on Nonisothermal Crystallization Kinetics of Polyamide 6." Polymers 15, no. 8 (2023): 1952. http://dx.doi.org/10.3390/polym15081952.

Full text

Abstract:

The effect of fusion temperature and duration on the nonisothermal crystallization kinetics of polyamide 6 (PA6) was investigated using differential scanning calorimetry (DSC) and a polarized optical microscope (OM). The rapid cooling method involved heating the polymer above its melting point, holding it at this temperature to ensure complete melting, and then rapidly cooling it to the crystallization temperature. By monitoring the heat flow during cooling, the crystallization kinetics of PA6 were characterized, including the degree of crystallinity, crystallization temperature, and crystalli

APA, Harvard, Vancouver, ISO, and other styles

10

Zhang, Qiuhe, Lisha Zhao, Ting Deng, and Yanhua Cai. "Study on the Performances of PLLA/CaSiO3 Composites." E3S Web of Conferences 236 (2021): 02037. http://dx.doi.org/10.1051/e3sconf/202123602037.

Full text

Abstract:

In the current work, calcium silicate (CaSiO3) was blended with the poly (L-lactic acid) (PLLA) to prepare the PLLA/CaSiO3 composites, and the crystallization process, melting process and thermal decomposition behavior of PLLA/CaSiO3 composites were studied. The promoting effect of CaSiO3 on the crystallization of PLLA was proved by the melt-crystallization, and the CaSiO3 content was a crucial factor to the crystallization behavior of PLLA. The crystallization temperature significantly affected the melting behavior of PLLA, and the double melting peaks degenerated into the single melting peak

APA, Harvard, Vancouver, ISO, and other styles

11

Tsydypov, D. G., A. V. Nomoev, and B. Z. Garmaev. "Study of the thermodynamic characteristics of gold nanoparticles in the processes of melting and crystallization by the molecular dynamics method." Scientific and Technical Journal of Information Technologies, Mechanics and Optics 25, no. 2 (2025): 229–35. https://doi.org/10.17586/2226-1494-2025-25-2-229-235.

Full text

Abstract:

The article presents the results of computer modeling of melting and crystallization processes of spherical gold nanoparticles. The molecular dynamics method was used to analyze the thermodynamic characteristics (temperature, heat, entropy of melting, and crystallization) of nanoparticles for different heating and cooling rates. Such studies allow choosing the most suitable temperature ranges for the formation of nanocrystalline structures and predicting their sizes. Reducing the size of gold nanoparticles (less than 100 nm) leads to a significant increase in the ratio of the surface area to t

APA, Harvard, Vancouver, ISO, and other styles

12

Krutphun, Pongpipat, and Pitt Supaphol. "Miscibility, Isothermal Crystallization/Melting Behavior and Morphology of Poly(Trimethylene Terephthalate)/Poly(Buthylene Terephthalate) Blends." Advances in Science and Technology 54 (September 2008): 243–48. http://dx.doi.org/10.4028/www.scientific.net/ast.54.243.

Full text

Abstract:

Blends of poly(trimethylene terephthalate) (PTT) and poly(buthylene terephthalate) (PBT) in the amorphous state were miscible in all of the blend compositioins studied, as evidenced by a single, composition-dependent glass-transition temperature observed for each blend composition. The variation in the glass-transition temperature was well-predicted by the Gordon- Taylor equation, with the fitting parameter being 1.37. The cold-crystallization (peak) temperature increased with increasing PBT content in the blends. The subsequent melting endotherms after melt crystallization exhibited melting p

APA, Harvard, Vancouver, ISO, and other styles

13

Zhao, Li-Sha, and Yan-Hua Cai. "Insight on the effect of a piperonylic acid derivative on the crystallization process, melting behavior, thermal stability, optical and mechanical properties of poly(l-lactic acid)." e-Polymers 20, no. 1 (2020): 203–13. http://dx.doi.org/10.1515/epoly-2020-0027.

Full text

Abstract:

AbstractA new piperonylic acid derivative (BPASD) was synthesized and evaluated as an organic nucleating agent for poly(l-lactic acid) (PLLA) via melt-crystallization; the other behaviors including cold-crystallization, melting process after crystallization, thermal stability in air atmosphere, and optical and mechanical properties of PLLA/BPASD samples were also investigated. The results of the melt-crystallization investigation showed that, in comparison to virgin PLLA, the BPASD could induce PLLA to crystallize in higher temperature region or at a faster cooling rate, suggesting that the BP

APA, Harvard, Vancouver, ISO, and other styles

14

Zhao, Li-Sha, Ting Deng, Jun Qiao, and Yan-Hua Cai. "Physical Properties of Biodegradable Poly(L-lactide) Induced by N, N -Bis(Benzoyl) 1, 3-Cyclohexanedicarboxylic Acid Dihydrazide as Crystallinity Additive." Materiale Plastice 58, no. 2 (2021): 48–59. http://dx.doi.org/10.37358/mp.21.2.5477.

Full text

Abstract:

This work is aimed at synthesizing an organic compound N, N -bis(benzoyl) 1,3-cyclohexane-dicarboxylic acid dihydrazide (CABH) to focus on its effect on the non-isothermal crystallization of poly(L-lactide) (PLLA), meanwhile the melting behavior, thermal decomposition process and optical property of PLLA/CABH samples in different CABH concentrations were also investigated. It was found that CABH acted as efficient heterogeneous nucleating agent for inducing PLLA�s crystallization through comparative analysis of melt-crystallization process of the virgin PLLA with PLLA/CABH samples, and a high

APA, Harvard, Vancouver, ISO, and other styles

15

Cai, Yan-Hua. "Crystallization and Melting Behavior of Biodegradable Poly(L-lactic acid)/Talc Composites." E-Journal of Chemistry 9, no. 3 (2012): 1569–74. http://dx.doi.org/10.1155/2012/570752.

Full text

Abstract:

Crystallization and melting behavior of Poly(L-lactic acid)(PLLA)/Talc composites with different talc content were investigated in detail. The addition of talc can increase the overall crystallization rate of PLLA, 5%talc makes the melt-crystallization peak temperature of PLLA increase from 96.28 °C to 105.22 °C, and the crystallization enthalpy increases from 1.379 J•g-1to 28.99 J•g-1. The melting behavior of PLLA/5%talc composites at a different heating rate during non-isothermal crystallization at different cooling rate shows that heating rate can affect the melting behavior of PLLA, with i

APA, Harvard, Vancouver, ISO, and other styles

16

Huang, Hao, Shuang-Qing Liu, Cheng-Pei Li, Shi-Tianle Luo, Li-Sha Zhao, and Yan-Hua Cai. "Poly (L-lactic acid) Modified by N, N -bis(Stearic acid)-1,4-Dicarboxybenzene Dihydrazide: Studies of Crystallization, Melting Behavior and Thermal Decomposition." Materiale Plastice 58, no. 4 (2022): 73–83. http://dx.doi.org/10.37358/mp.21.4.5533.

Full text

Abstract:

In this study, a new organic nucleating agent N, N -bis(stearic acid)-1,4-dicarboxybenzene dihydrazide (PASH) to improve crystallization behavior of poly(L-lactic acid) (PLLA) along with the effect of PASH on melting behavior, thermal stability of PASH-nucleated PLLA was holistically reported. The melt-crystallization process illustrated that PASH as an effective heterogeneous nucleating agent could boost PLLA�s crystallization rate, but increasing PASH concentration and cooling rate conversely inhibited melt-crystallization process of PLLA in this study. With respect to melt-crystallization p

APA, Harvard, Vancouver, ISO, and other styles

17

Cai, Yan-Hua, and Yan-Hua Zhang. "The Crystallization, Melting Behavior, and Thermal Stability of Poly(L-lactic acid) Induced byN,N,N′-Tris(benzoyl) Trimesic Acid Hydrazide as an Organic Nucleating Agent." Advances in Materials Science and Engineering 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/843564.

Full text

Abstract:

N,N,N′-Tris(benzoyl) trimesic acid hydrazide (TTAD), as a novel nucleating agent of poly(L-lactic acid) (PLLA), was synthesized and characterized by FT-IR and1H NMR. The crystallization, melting behavior, and thermal stability of PLLA induced by TTAD were investigated through DSC, TGA, depolarized-light intensity measurement, and so forth. The crystallization behavior indicated that the presence of TTAD accelerated the overall PLLA crystallization. Compared to neat PLLA, the crystallization onset temperature of PLLA/1%TTAD increased from 101.36°C to 125.26°C, the melt-crystallization peak temp

APA, Harvard, Vancouver, ISO, and other styles

18

Zhao, Lisha, Jun Qiao, Xueling Shan, Yanhua Cai, and Jie Zhang. "Effect of 1,4-Naphthalenedicarboxylic Acid Derivative on Crystallization and Performances of Poly(L-lactide)." Materiale Plastice 58, no. 1 (2021): 57–68. http://dx.doi.org/10.37358/mp.21.1.5445.

Full text

Abstract:

In this work, biodegradable Poly(L-lactide) (PLLA) was modified through adding a new organic additive N, N -bis(benzoyl) 1, 4-naphthalenedicarboxylic acid dihydrazide (NABH). A comparison on crystallization of the pure PLLA and PLLA/NABH revealed that the NABH as effective heterogeneous nucleation sites enhanced PLLA𠏋 crystallization, and an increase of NABH loading was able to further accelerate crystallization rate of PLLA; whereas a faster cooling rate was not conducive to PLLA𠏋 crystallization, but the appearance of obvious crystallization peak upon cooling at 30şC/min confirmed the advanc

APA, Harvard, Vancouver, ISO, and other styles

19

Huang, Hao, Yan-Hua Zhang, Li-Sha Zhao, Guang-Ming Luo, and Yan-Hua Cai. "Insight into the Role of a Isophthalic Dihydrazide Derivative Containing Piperonylic Acid in Poly(L-lactide) Nucleation: Thermal Performances and Mechanical Properties." Materiale Plastice 57, no. 3 (2020): 28–40. http://dx.doi.org/10.37358/mp.20.3.5377.

Full text

Abstract:

This work was aimed at synthesizing the N, N -isophthalic bis(piperonylic acid) dihydrazide (PAID) to be as a new crystallization accelerator for poly(L-lactide) (PLLA), and a detailed investigations of the non-isothermal crystallization, melting behavior, thermal decomposition behavior and mechanical properties of PLLA nucleated by PAID were performed applying differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and electronic tensile tester. The melt-crystallization proved that the PAID could act as a heterogeneous nucleating agent to significantly promote the crystalliz

APA, Harvard, Vancouver, ISO, and other styles

20

CAI, Yan-Hua, and Li-Sha ZHAO. "Heterogeneous Nucleation Effect of N, N'-Adipic Bis(4-phenylbutyric Acid) Dihydrazide on Crystallization Process of Poly(L-lactic Acid)." Materials Science 25, no. 4 (2019): 446–54. http://dx.doi.org/10.5755/j01.ms.25.4.20603.

Full text

Abstract:

Enhancing crystallization ability is a fundamental challenges in Poly(L-lactic acid) (PLLA) industry, therefore, the goal of this work was to synthesis a new organic nucleating agent N, N'-adipic bis(4-phenylbutyric acid) dihydrazide (APAD), and investigate its effect on non-isothermal crystallization, isothermal crystallization, melting behavior, thermal stability, and optical property of PLLA. Non-isothermal melt crystallization results showed that APAD acted as more effective nucleating and accelerating agent for the crystallization of PLLA, as a result, upon cooling at 1 °C/min, PLLA/0.5 %

APA, Harvard, Vancouver, ISO, and other styles

21

He, Xiao Feng, Shuai Wang, Tie Jun Ge, Xue Quan Zhang, and Chun Yu Zhang. "Crystallization Behavior of Polypropylene/Syndiotactic1,2-Polybutadiene Blends." Key Engineering Materials 531-532 (December 2012): 182–85. http://dx.doi.org/10.4028/www.scientific.net/kem.531-532.182.

Full text

Abstract:

The melting and crystallization behaviors of Polypropylene/Syndiotactic1,2-polybutadiene (PP/s-PB) blends and neat PP were studied by using DSC, the results showed that the presence of s-PB in PP would have a strong impact on the crystallization capacity of PP. The presence of s-PB in PP could increase the crystallization temperature(Tc) of PP, and the s-PB could obviously lower supercooling temperature(Tm-Tc) of PP, but the s-PB in PP have a Slightly influence on the melting temperature(Tm) of PP. The proposed reason for those are that the crosslinking s-PB in high temperature is a nucleator

APA, Harvard, Vancouver, ISO, and other styles

22

Zhang, Cai Jun, Dong Mei Tu, and Min Hu. "Influence of Titanium Compounds on Melting and Crystalline Temperature of Mold Powder." Advanced Materials Research 284-286 (July 2011): 1111–14. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.1111.

Full text

Abstract:

Influence of TiN(0.5%~2.5%) and TiO2(1%~5%) on melting and crystalline temperature have been studied and analyzed in ferritic stainless steel containing titanium mold powder. The results show that with the increasing TiN content from 0.5% to 2.5%, the melting and crystallization temperature of mold power change between 1053~1082°C and 951~981°C respectively. With TiO2 content from 1% to 2%, the melting temperature is lower from 1066°C to 1047°C. As the content of TiO2 increasing to 5%, melting temperature increases obviously to 1077°C. TiO2 has less effect on the crystallization temperature of

APA, Harvard, Vancouver, ISO, and other styles

23

Issa-Zacharia, Abdulsudi. "Effects of Dietary Supplements of DHA-enriched Micro Algae Diet on Physical and Technological Properties of Dairy Cow Milk Fat." Asian Food Science Journal 22, no. 9 (2023): 131–40. http://dx.doi.org/10.9734/afsj/2023/v22i9665.

Full text

Abstract:

This study examined the effect of dietary supplementation of DHA-enriched micro algae diet on physical and technological properties of dairy milk fat in terms of the dynamic crystallization and melting behaviour. Two dairy cows were subjected to feeding regime of DHA-enriched micro algae diet and control diet. The experiment was carried out during 21-d to determine the normal (control) and DHA-enriched micro algae diet modified milk fat that were taken for further analysis. The melting and crystallization behaviour of the milk fat from the cows fed control and DHA-enriched micro algae diets wa

APA, Harvard, Vancouver, ISO, and other styles

24

Saranov, I. A., I. A. Kuznetsov, I. V. Kuznetsova, and G. O. Magomedov. "Investigation of melting and crystallization processes of fat components of praline masses." Proceedings of the Voronezh State University of Engineering Technologies 80, no. 2 (2018): 323–27. http://dx.doi.org/10.20914/2310-1202-2018-2-323-327.

Full text

Abstract:

The processes of melting and crystallization of lauric fat KS35 and coconut oil by the method of differential scanning calorimetry were studied. The process of crystallization of coconut oil takes place in the temperature range 13.1–15.9 °C, while heat is released 118.3 J/g. The process of crystallization of lauric fat KS35 occurs in the temperature range 20.4–25.9 °C, with a heat release of 152.7 J / g. Lauric fat melts in the range of 28.7–33.9 °C, 147.4 J/g is absorbed during this endothermic reaction. Temperature interval, the heat effect of melting coconut oil is lower (18.3–26.4 °C, 95.5

APA, Harvard, Vancouver, ISO, and other styles

25

Wang, Dengfei, Shiyan Li, Ying Lu, Jian Wang, and Yongfeng Men. "Melt Memory Effect in Polyethylene Random Terpolymer with Small Amount of 1-Octene and 1-Hexene Co-Units: Non-Isothermal and Isothermal Investigations." Polymers 15, no. 7 (2023): 1721. http://dx.doi.org/10.3390/polym15071721.

Full text

Abstract:

Homo-polymers of reasonable molecular weight relax very fast in the molten state. Starting from a semi-crystalline structure, when the homo-polymer is heated up to a temperature higher than its nominal melting temperature, it relaxes quickly into a homogenous molten state. The following crystallization temperature during cooling remains constant irrespective of the melt temperature. However, the situation is evidently different in copolymers. A phenomenon named the crystallization melt memory effect denotes an increased crystallization rate during cooling after a polymer was melted at differen

APA, Harvard, Vancouver, ISO, and other styles

26

An, Chuanbin, Yulian Li, Yahui Lou, et al. "Thermal Analysis of Crystallization and Phase Transition in Novel Polyethylene Glycol Grafted Butene-1 Copolymers." Polymers 11, no. 5 (2019): 837. http://dx.doi.org/10.3390/polym11050837.

Full text

Abstract:

Copolymerization is an effective strategy to regulate the molecular structure and tune crystalline structures. In this work, novel butene-1 copolymers with different polyethylene glycol (PEG) grafts (number-average molecular weight Mn = 750, 2000, and 4000 g/mol) were synthesized, for the first time introducing long-chain grafts to the polybutene-1 main chain. For these PEG-grafted copolymers, crystallization, melting, and phase transition behaviors were explored using differential scanning calorimetry. With respect to the linear homopolymer, the incorporation of a trimethylsilyl group decreas

APA, Harvard, Vancouver, ISO, and other styles

27

Huang, Hao, Jie Wu, Yanhua Cai, Jie Cheng, Lin Zhang, and Lisha Zhao. "Nucleating Agents to Enhance Poly(L-lactide) Crystallization and Melting Behavior of Modified Poly(L-lactide)." Materiale Plastice 60, no. 2 (2023): 52–65. http://dx.doi.org/10.37358/mp.23.2.5661.

Full text

Abstract:

Melt processing poly(L-lactide) (PLLA) with a nucleating agent has been thought to be one of the most effective route to enhance PLLA s crystallization and heat resistance. In the current work, a newly-developed organic nucleating agent named N, N -bis(2-picolinyl) 1, 4-naphthalenedicarboxylic acid dihydrazide (NCAPH) was synthesized to investigate its effects on PLLA�s crystallization and melting behaviors. It is proved that NCAPH as an organic crystallization nucleating agent could provide large number of crystallization nucleation sites to improve PLLA�s crystallization, as observed from DS

APA, Harvard, Vancouver, ISO, and other styles

28

Zhao, Li-Sha, Yan-Hua Cai, and Hui-Li Liu. "N, N’-sebacic bis(hydrocinnamic acid) dihydrazide: A crystallization accelerator for poly(L-lactic acid)." e-Polymers 19, no. 1 (2019): 141–53. http://dx.doi.org/10.1515/epoly-2019-0016.

Full text

Abstract:

AbstractDeveloping more organic nucleating agent with different molecular structure is very instructive to improve the crystallization of poly(L-lactic acid) (PLLA) and explore the crystallization mechanism. In this study, N, N’-sebacic bis(hydrocinnamic acid) dihydrazide (HAD) was synthesized to serve as a nucleating agent for PLLA. The effects of HAD on the non-isothermal crystallization, melting behavior, thermal stability and optical performance of PLLA were investigated by differential scanning calorimeter (DSC), thermogravimetric analysis (TGA), and light transmittance meter. The melt cr

APA, Harvard, Vancouver, ISO, and other styles

29

Zheng, Wei Hong, Yang Dai, Mo Zhou Lin, Kun Yang, and Hao Wu. "The Effect of Fluorine on the Viscosity and Crystallization of Lithium Aluminosilicate Glasses." Key Engineering Materials 509 (April 2012): 346–52. http://dx.doi.org/10.4028/www.scientific.net/kem.509.346.

Full text

Abstract:

Lithium aluminosilicate glasses have high viscosities, resulting in high melting temperatures and processing temperatures. In this study, F was added to the LAS glasses to reduce the melting temperature and viscosity for float process. The effects of fluorine content on the viscosity and crystallization of the parent glasses were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), differential thermal analysis (DTA) and rotation viscometer. It was found that the addition of F was useful in reducing the melting temperature and viscosity. The main crystalline phase of re

APA, Harvard, Vancouver, ISO, and other styles

30

Pluta, Miroslaw, Joanna Bojda, Mariia Svyntkivska, Tomasz Makowski, Ele L. de Boer, and Ewa Piorkowska. "Crystallization-Controlled Structure and Thermal Properties of Biobased Poly(Ethylene2,5-Furandicarboxylate)." Polymers 16, no. 21 (2024): 3052. http://dx.doi.org/10.3390/polym16213052.

Full text

Abstract:

Crystallization-controlled structure and thermal properties of biobased poly(ethylene 2,5-furandicarboxylate) (PEF) were studied. The cold-crystallization temperature controlled the structure and thermal properties of the biobased PEF. The melting was complex and evidenced the presence of a significant fraction of less-stable crystals with a low melting temperature that linearly increased with Tc, which formed already during the early stages of crystallization, together with those melting at a higher temperature. Low Tc resulted in the α’-phase formation, less crystallinity, and greater conten

APA, Harvard, Vancouver, ISO, and other styles

31

Shi, Kaiwen, Guanli Xu, Di Wu, et al. "The Impact of Redox Atmosphere on the High-Temperature Melting Behavior of Basalt Materials." Minerals 15, no. 6 (2025): 596. https://doi.org/10.3390/min15060596.

Full text

Abstract:

This study systematically reveals the fundamental mechanisms controlling redox-induced phase transformations occurring in basalt melting processes via integrated high-temperature redox experiments combined with thermodynamic simulations. Our findings demonstrate that oxidizing conditions drive clinopyroxene dissolution and concurrent crystallization of refractory phases—hematite [(Fe,Ti,Al)2O3] and magnesioferrite [(Mg,Fe)(Fe,Al)2O4]—where distinct crystallization pathways govern magnesioferrite morphology evolution. Conversely, reducing environments suppress oxide mineral formation while prom

APA, Harvard, Vancouver, ISO, and other styles

32

Run, Ming Tao, Yan Ping Hao, and Hong Zan Song. "Study on Crystal Morphology and Melting Properties of the Isothermally Crystallized Poly(trimethylene Terephthalate)." Key Engineering Materials 428-429 (January 2010): 259–62. http://dx.doi.org/10.4028/www.scientific.net/kem.428-429.259.

Full text

Abstract:

The spherulites’ morphology and melting properties of the poly(trimethylene terephthalate) formed in limited space at specific temperatures was studied by the polarized optical microscopy (POM). The results suggest that the spherulites’ morphology depends strongly on the temperature. When the isothermal crystallization temperatures increase from 190 to 225 oC, the spherulites’ morphology continuously changes in the following order: nonbanded → regular banded → serrated banded → nonbanded spherulites. Furthermore, the band spacing increases with the crystallization temperature. Heating the band

APA, Harvard, Vancouver, ISO, and other styles

33

Herrera-Kao, W., M. Cervantes-Uc, T. Lara-Ceniceros, and M. Aguilar-Vega. "Characterization of Polyesters Obtained by Enzyme-Catalyzed Ring-Opening Polymerization of Pentadecanolide at high Temperature." MRS Proceedings 1767 (2015): 35–41. http://dx.doi.org/10.1557/opl.2015.224.

Full text

Abstract:

ABSTRACTDifferences on physicochemical properties of poly(pentadecanolide), PPDL, synthesized by enzymatic ring opening polymerization at two different temperatures, 70 C and 90 C, using Novozyme-430 were assessed. PPDL synthesized at 90°C presents lower molecular weight and crystallinity than the one prepared at 70°C. It was detected by FTIR that PPDL synthesized at 90°C presents a large amorphous phase with more terminal OH groups. A difference in the melting and crystallization behavior was detected by differential scanning calorimetry, DSC, where the melting of the PPDL synthesized at 90°C

APA, Harvard, Vancouver, ISO, and other styles

34

Zhao, Lisha, Yang Lv, Jiale Chen, Hao Huang, Xiaoqin Zhou, and Yanhua Cai. "The Performance Investigation of PLLA/PPAPH: The Influence of PPAPH as Heterogeneous Crystal Nuclei." Materiale Plastice 61, no. 1 (2024): 157–69. http://dx.doi.org/10.37358/mp.24.1.5711.

Full text

Abstract:

To overcome PLLA�s poor crystallization capability, using nucleating agent as crystallization improvement strategy was performed in this study. PPAPH as PLLA�s an organic nucleating agent was firstly synthesized, and then PLLA was blended with different PPAPH loading through melting blend method, the resulting influences of PPAPH on PLLA�s performances were investigated using the relevant testing instruments. Melt-crystallization revealed that PPAPH played important role in promoting PLLA�s crystallization through providing effective sites of heterogeneous nucleation, and effect of PPAPH loadi

APA, Harvard, Vancouver, ISO, and other styles

35

Trabelsi, S., P. A. Albouy, and J. Rault. "Stress-Induced Crystallization Properties of Natural and Synthetic CIS-Polyisoprene." Rubber Chemistry and Technology 77, no. 2 (2004): 303–16. http://dx.doi.org/10.5254/1.3547825.

Full text

Abstract:

Abstract Stress-induced crystallization and melting of natural and synthetic cis-isoprene are compared by simultaneous Wide Angles X-ray Scattering (WAXS) and mechanical measurements. Natural (NR) and synthetic polyisoprene (SR) rubbers have the same composition and sulfur crosslink density. At fixed elongation and during cyclic deformation, the properties X of the semi crystalline phase are determined as function of draw ratio λ; X being crystallites dimensions and orientation, half-time of crystallization, melting temperature, crystallinity and crystalline zone dimensions around a crack tip.

APA, Harvard, Vancouver, ISO, and other styles

36

Müller, Miriam, and Enrico Careglio. "Influence of Free Fatty Acids as Additives on the Crystallization Kinetics of Cocoa Butter." Journal of Food Research 7, no. 5 (2018): 86. http://dx.doi.org/10.5539/jfr.v7n5p86.

Full text

Abstract:

In this study, the influence of free fatty acids as additives on the crystallization kinetics of cocoa butter (CB) and the industrial tempering was considered for the first time. Different concentrations (0.5 %-5.0 %) of stearic, palmitic and oleic acid were added to CB and crystallized at isothermal temperatures between 18-28 °C. To imitate the industrial tempering, β-crystals were actively formed using a temper. The solid fat content (SFC) was determined by pulsed NMR with data fitted to the Gompertz equation and melting temperature and polymorphic behaviour were analysed by DSC. With an inc

APA, Harvard, Vancouver, ISO, and other styles

37

Athanasoulia, Ioanna-Georgia I., Maximos N. Christoforidis, Dimitrios M. Korres, and Petroula A. Tarantili. "The effect of hydroxyapatite nanoparticles on crystallization and thermomechanical properties of PLLA matrix." Pure and Applied Chemistry 89, no. 1 (2017): 125–40. http://dx.doi.org/10.1515/pac-2016-0912.

Full text

Abstract:

AbstractIn this study, hydroxyapatite (HA) was incorporated in a poly(L-lactic acid) (PLLA) matrix and the thermal properties and crystallization behavior of the derived composites were investigated. The nanocomposites, containing 0–20 wt% HA, were prepared by melt extrusion employing a twin-screw extruder. XRD experiments verified an increase in the intensity of the characteristic diffraction peak of the α-form crystalline phase of PLLA with increasing HA content. By DSC experiments it was observed that the presence of HA increased the crystallinity during cold crystallization, leading to a s

APA, Harvard, Vancouver, ISO, and other styles

38

G. KADAM, PRAVIN, and SHASHANK T. MHASKE. "Effect of Nylon-6 Concentration on the Properties of Hot Melt Adhesive Synthesized using Dimer Acid and Ethylenediamine." Material Science Research India 9, no. 2 (2012): 215. http://dx.doi.org/10.13005/msri/090206.

Full text

Abstract:

Hot melt adhesive synthesized using polymerized fatty acid (PFA) (composition: ~1% trilinoleic acid, ~97% dilinoleic acid and ~2% linoleic acid) and ethylenediamine was blended with nylon-6, in-situ during the synthesis process to improve its performance properties. Nylon-6 was added in concentrations as 5, 10, 15 and 20 phr in the hot melt adhesive. The prepared blends were characterized for thermal (melting temperature, crystallization temperature, enthalpy of melting and enthalpy of crystallization), mechanical (tensile strength, tensile modulus, stiffness, percentage elongation at break an

APA, Harvard, Vancouver, ISO, and other styles

39

Toda, Akihiko. "Temperature-Modulated Scanning Calorimetry of Melting–Recrystallization of Poly(butylene terephthalate)." Polymers 13, no. 1 (2021): 152. http://dx.doi.org/10.3390/polym13010152.

Full text

Abstract:

The melting and recrystallization behaviors of poly(butylene terephthalate) (PBT) were investigated using temperature-modulated scanning calorimetry in both fast- and conventional slow-scan modes. With this method, the response of multiple transition kinetics, such as melting and recrystallization, can be differentiated by utilizing the difference in the time constants of the kinetics. In addition to the previous result of temperature-modulated fast-scan calorimetry of polyethylene terephthalate (PET), the supporting evidence of another aromatic polyester, PBT, confirmed the behavior of the ex

APA, Harvard, Vancouver, ISO, and other styles

40

Aleksandrovа, Е. А., B. L. Aleksandrov, Zh T. Khadisova, Kh Kh Akhmadova, and L. Sh Makhmudova. "Crystallization and Structural Solidification of Paraffins in Various Solvents." Chemistry and Technology of Fuels and Oils 624, no. 2 (2021): 25–29. http://dx.doi.org/10.32935/0023-1169-2021-624-2-25-29.

Full text

Abstract:

The temperatures of the beginning of crystallization and solidification of solutions of petroleum and synthetic paraffins of different concentrations in nonpolar and weakly polar hydrocarbon solvents of different composition and viscosity are studied. It is shown that paraffins of different origin and hydrocarbon composition, with similar melting points, have slightly different crystallization temperatures аnd solidification in this solvent. The temperature range between the temperatures of the beginning of crystallization and solidification of the studied paraffin solutions is established.

APA, Harvard, Vancouver, ISO, and other styles

41

Liu, Shoushan, Dong Li, Xinyi He, et al. "Study on crystallization kinetics of dry fractionation products of beef tallow." International Journal of Food Engineering 17, no. 12 (2021): 945–58. http://dx.doi.org/10.1515/ijfe-2021-0176.

Full text

Abstract:

Abstract The dry fractionation beef tallow and their products were analyzed in the dynamic thermodynamic analysis, isothermal analysis and crystallization kinetics analysis in this experiment. Through the dynamic thermodynamic analysis by DSC, the possibility of fine fractionation of beef tallow at 25 °C and 42.9 °C crystallization temperature was obtained. The dynamic thermodynamic analysis of dry fractionation products was carried out, and the linear functions of peak temperature and melting/crystallization rate of beef tallow and its stearic acid mixture were constructed. The crystallizatio

APA, Harvard, Vancouver, ISO, and other styles

42

Kuryakov, V. N., and D. D. Ivanova. "Crystallization Behavior of Pure n-Alkane (n-Nonadecane) in a form of Nanoemulsion." International Journal of Nanoscience 18, no. 03n04 (2019): 1940032. http://dx.doi.org/10.1142/s0219581x19400325.

Full text

Abstract:

Stable emulsions of individual n-alkane (n-nonadecane) in water with different average particle size were prepared without surfactants. The phase transition temperatures for n-nonadecane were determined by the dynamic light scattering method. The effect of the n-alkane particle size on the melting and crystallization temperatures was studied. The crystallization temperature significantly decreases for particles smaller than a certain characteristic value.

APA, Harvard, Vancouver, ISO, and other styles

43

Kuriakose, Naveen, Pallavi Bapat, Harriet Lindsay, and John Texter. "Reversible Colloidal Crystallization." MRS Advances 5, no. 40-41 (2020): 2111–19. http://dx.doi.org/10.1557/adv.2020.286.

Full text

Abstract:

AbstractWe report 3D colloidal self-assembly (crystallization) of poly(ionic liquid) latexes to produce crystals that exhibit reversible melting and recrystallization in water, due to “classical” interparticle interactions, typical of multifunctional polymers. These new materials are derived from an ionic liquid monomer that is polymerized at room temperature by redox-initiated polymerization. Particle synthesis, self-assembly, thermal properties, and introductory light diffraction effects are reported with a focus on melting. These crystals are distinguishable from classical colloidal crystal

APA, Harvard, Vancouver, ISO, and other styles

44

Gent, A. N., and L. Q. Zhang. "Strain-Induced Crystallization and Strength of Rubber." Rubber Chemistry and Technology 75, no. 5 (2002): 923–34. http://dx.doi.org/10.5254/1.3547692.

Full text

Abstract:

Abstract The rate and extent of crystallization in crosslinked samples of natural rubber (NR), cis-1,4-polybutadiene (BR), and butyl rubber (IIR), were studied by observing the relaxation of stress in stretched strips, held at low temperatures. Melting temperatures were measured from the recovery of stress on warming. The melting temperature was raised by stretching, and the rise was significantly greater for NR than for BR, consistent with the lower heat of fusion of NR. In some cases crystallization was also followed by volume changes, or by DSC or x-ray diffraction. The maximum degree of cr

APA, Harvard, Vancouver, ISO, and other styles

45

Okui, Norimasa. "Relationships between melting temperature, maximum crystallization temperature and glass transition temperature." Polymer 31, no. 1 (1990): 92–94. http://dx.doi.org/10.1016/0032-3861(90)90355-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Fortelný, Ivan, Jana Kovářová, and Josef Kovář. "Flow-Induced Crystallization of High-Density Polyethylene." Collection of Czechoslovak Chemical Communications 60, no. 10 (1995): 1733–40. http://dx.doi.org/10.1135/cccc19951733.

Full text

Abstract:

Crystallization induced by flow in the capillary viscometer was studied for four grades of linear polyethylene. From rheological and DSC measurements it follows that crystallization was induced in all samples under study at temperatures higher than melting temperatures of the same samples crystallized at rest. The maximum temperature of flow-induced crystallization increases with increasing molar mass of polyethylene. Flow-induced crystallization of injection moulding grades of polyethylene only takes place in a limited interval of shear rates. This effect is explained as a consequence of the

APA, Harvard, Vancouver, ISO, and other styles

47

Poletaev, Gennady M., Andrey V. Sannikov, and Viktor V. Kovalenko. "Effect of carbon impurity on the temperatures of melting and crystallization of nickel nanoparticles: molecular dynamic simulation." Himičeskaâ fizika i mezoskopiâ 26, no. 2 (2024): 274–83. http://dx.doi.org/10.62669/17270227.2024.2.24.

Full text

Abstract:

The molecular dynamics method was used to study the processes of melting and crystallization of nickel nanoparticles and the influence of carbon impurities on these processes. The influence of the particle size and concentration of carbon atoms, which were initially randomly distributed in the volume of a nickel particle, was considered. The particle diameter varied from 1.5 to 12 nm, and the concentration of carbon atoms varied from 0 to 10 at.%. It has been shown that the melting and crystallization temperatures are inversely proportional to the particle diameter: as the particle size decrea

APA, Harvard, Vancouver, ISO, and other styles

48

Guo, Yong, Shiliu Zhu, Yuxia Chen, and Dagang Li. "Thermal Properties of Wood-Plastic Composites with Different Compositions." Materials 12, no. 6 (2019): 881. http://dx.doi.org/10.3390/ma12060881.

Full text

Abstract:

The thermal performance of wood–plastic composites (WPCs) with different fiber, different fiber contents, and different lubricants were investigated in this paper. The results show that the thermal degradation temperature, melting temperature, crystallization temperature, crystallinity, and viscosity of WPCs with wood fiber were slightly higher than those of WPCs with floor sanding powder and rice husk. As the wood fiber content increased, the melting temperature and crystallinity of WPCs decreased while the crystallization temperature, viscosity, and pseudoplasticity increased. When the wood

APA, Harvard, Vancouver, ISO, and other styles

49

Cai, Yan-Hua, and Li-Sha Zhao. "Thermal behavior of modified poly(L-lactic acid): effect of aromatic multiamide derivative based on 1H-benzotriazole." e-Polymers 16, no. 4 (2016): 303–11. http://dx.doi.org/10.1515/epoly-2016-0052.

Full text

Abstract:

AbstractThe goal of this work was to synthesis a novel aromatic multiamide derivative based on 1H-benzotriazole (PB) as an organic nucleating agent for poly(L-lactic acid) (PLLA), and investigate the effect of PB on the non-isothermal crystallization, melting behavior and thermal decomposition of PLLA. Here, PB was firstly synthesized through 1H-benzotriazole aceto-hydrazide and terephthaloyl chloride, then PB-nucleated PLLA was fabricated via melt-blending technology at various PB concentration from 0.5 wt% to 3 wt%. Finally, the thermal performances were evaluated through differential scanni

APA, Harvard, Vancouver, ISO, and other styles

50

Okui, Norimasa. "Relationship between crystallization temperature and melting temperature in crystalline materials." Journal of Materials Science 25, no. 3 (1990): 1623–31. http://dx.doi.org/10.1007/bf01045361.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!