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Relevant bibliographies by topics / Statistical copolymer

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Academic literature on the topic 'Statistical copolymer'

Author: Grafiati

Published: 25 May 2024

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Journal articles on the topic "Statistical copolymer"

1

Yang, Lei, Cheng Jie Hu, Hai Yang, and Dong Ming Qi. "Synthesis of Polystyrene-b-poly(n-butyl acrylate)-b-Polystyrene Triblock Copolymers as Binder for Pigment Dyeing." Advanced Materials Research 441 (January 2012): 473–77. http://dx.doi.org/10.4028/www.scientific.net/amr.441.473.

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Well-controlled polystyrene-b-poly (n-butyl acrylate)-b-polystyrene (PSt-b-PnBA-b-PSt) triblock copolymers were prepared by RAFT (reversible addition-fragmentation chain transfer) emulsion polymerization process. The mechanical properties of the triblock copolymers were investigated in comparison to the P(nBA-co-St) statistical copolymers. When the PSt content is 20%, the ultimate tensile strength of triblock copolymer is nearly six times the strength of statistical copolymer, while their modulus are all around 3.0×103 Pa. The triblock copolymer films feel smooth and non-tacky as the PSt content is higher than 20%. It indicates that PSt-b-PnBA-b-PSt triblock copolymers can be used as binders in pigment dyeing, providing the dyed fabrics with soft non-tacky handle and good fastness properties.

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2

Kotsuchibashi, Y., M. Ebara, A. S. Hoffman, R. Narain, and T. Aoyagi. "Temperature-responsive mixed core nanoparticle properties determined by the composition of statistical and block copolymers in the core." Polymer Chemistry 6, no. 10 (2015): 1693–97. http://dx.doi.org/10.1039/c4py01794c.

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Mixed core nanoparticles were prepared from self-assembled statistical and block copolymers by controlling the solution temperature. Interestingly, an equal mass of specific statistical copolymers was successfully loaded into block copolymer micelle cores.

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Garcia-Rubio, L. H., and N. Ro. "Detailed copolymer characterization using ultraviolet spectroscopy." Canadian Journal of Chemistry 63, no. 1 (1985): 253–63. http://dx.doi.org/10.1139/v85-042.

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A method is demonstrated for the interpretation of the ultraviolet spectra of styrene-containing copolymers. This method is based on the use of model molecules to approximate the absorption behaviour of the known chromophores and on the statistical estimation of the average spectra of the unknown chromophores. The analysis yields directly the copolymer composition and an estimate of the background spectra which arise from the different arrangements of the styril units along the polymer chains. It is shown that reliable composition estimates are obtained for styrene – methyl methacrylate and styrene–acrylonitrile copolymers. The results from the interpretation of the spectra are discussed and compared with results obtained from the statistical copolymerization models.

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Crist, Buckley. "Thermodynamics of statistical copolymer melting." Polymer 44, no. 16 (2003): 4563–72. http://dx.doi.org/10.1016/s0032-3861(03)00331-8.

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Gikarakis, Theodoros, Ioannis Pappas, Pothiti Arvanitaki, et al. "Thermal Stability and Kinetics of Thermal Decomposition of Statistical Copolymers of N-Vinylpyrrolidone and Alkyl Methacrylates Synthesized via RAFT Polymerization." Journal of Chemistry 2021 (March 19, 2021): 1–12. http://dx.doi.org/10.1155/2021/6633052.

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The thermal stability and the kinetics of thermal decomposition of statistical copolymers of N-vinylpyrrolidone (NVP) with the alkyl methacrylates, hexyl methacrylate (HMA) and stearyl methacrylate (SMA), were studied by Thermogravimetric Analysis (TGA) and Differential Thermogravimetry (DTG). Statistical copolymers of different compositions were studied, and their thermal decomposition behavior was compared to the corresponding homopolymers. The activation energies of the thermal decomposition were calculated using the Ozawa-Flynn-Wall, the Kissinger, and the Kissinger-Akahira-Sunose methodologies. The effects of the nature of the methacrylate monomer, the copolymer composition, and the rate of heating are discussed.

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Lokitz, Brad S., Jonathan E. Stempka, Adam W. York, et al. "Chiroptical Properties of Homopolymers and Block Copolymers Synthesized from the Enantiomeric Monomers N-Acryloyl-L-Alanine and N-Acryloyl-D-Alanine Using Aqueous RAFT Polymerization." Australian Journal of Chemistry 59, no. 10 (2006): 749. http://dx.doi.org/10.1071/ch06264.

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Chiral homo- and block copolymers based on the enantiomeric monomers N-acryloyl-l-alanine (ALAL) and N-acryloyl-d-alanine (ADAL) were prepared directly in water using controlled reversible addition–fragmentation chain transfer (RAFT) polymerization. The polymerization of the chiral monomers proceeded in a controlled fashion producing the respective homopolymers, block copolymers, and a statistical copolymer with targeted molecular weights and narrow molecular weight distributions. The chiroptical activity of these biomimetic polymers and their analogous model compounds was investigated using circular dichroism (CD). P(ALAL) and P(ADAL) were shown to be optically active exhibiting mirror image CD spectra. In addition, statistical and enantiomeric block copolymers prepared at 1:1 stochiometric ratios exhibited virtually no optical activity.

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7

Mahudeswaran, A., J. Vivekanandan, P. S. Vijayanand, T. Kojima, and S. Kato. "A facile synthesis of poly(aniline-co-o-bromoaniline) copolymer: Characterization and application as semiconducting material." International Journal of Modern Physics B 30, no. 05 (2016): 1650008. http://dx.doi.org/10.1142/s0217979216500089.

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Poly(aniline-co-o-bromoaniline) (p(an-co-o-BrAn)) copolymer has been synthesized using chemical oxidation method in the hydrochloric acid medium. Copolymerization of aniline with o-bromoaniline of different compositions, such as 1:1, 1:2, 2:1, 1:3 and 3:1 molar ratios were prepared. The synthesized copolymer is soluble in polar solvents like dimethyl sulphoxide (DMSO), dimethyl formamide (DMF), Tetrahydrofuran (THF) and 1-methyl 2-pyrrolidone (NMP). The copolymer is analyzed by various characterization techniques, such as FTIR, UV–Visible (UV–Vis) spectroscopy, X-ray diffraction (XRD), conductivity, Differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). FTIR spectrum confirms the characteristic peaks of the copolymer containing benzenoid and quinoid ring stretching. UV spectrum reveals the formation of [Formula: see text]–[Formula: see text] transition and [Formula: see text]–[Formula: see text] transition between the energy levels. XRD peaks reveal that the copolymer possesses amorphous nature. Morphological study reveals that the agglomerated particles form globular structure and size of the each particle is about 100 nm. The electrical conductivity of the copolymers is found in the range of [Formula: see text]. These organic semiconductor materials can be used to fabricate thinner and cheaper environmental friendly optoelectronic devices that will replace the conventional inorganic semiconductors.

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Abbasova, L. Sh. "Preparation of copolymer of allyl ester of salicylic acid with styrene and study of its antifungal properties." Perspektivnye Materialy 4 (2022): 34–39. http://dx.doi.org/10.30791/1028-978x-2022-4-34-39.

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The reactions of radical copolymerization of the allyl ester of salicylic acid with styrene were carried out and their patterns and products were studied. The Feinemann-Ross method was used to determine the constants of the relative activity of the copolymers (r1 = 0.02 and r2 = 9.6) and the parameters of the microstructure of the obtained copolymers. It was found that with an increase in the styrene content from 10 to 90 mol. % in the initial mixture of monomers, the average length of microblocks consisting of styrene units increases from 2.07 to 87.4, the length of microblocks of allylsalicylate units practically does not change, and the Harvurd constants decrease from 61.60 to 2.26. The results of studying the composition and structure of styrene and allyl salicylate copolymer samples under various conditions, as well as the values of the copolymerization constants and microstructure parameters, show that the copolymer macromolecules have a statistical structure, include allylsalicylate fragments and styrene microblocks. Studying the antifungal properties, it was found that the investigated copolymer of allyl ester of salicylic acid with styrene possesses such properties. Micromycetes such as Aspergillus niger, A.ochraseus, Penicillium cuclopium, Cladosporium herbarium, Fusarium moniliforme and F.oxysporium were used as test cultures.

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Chowdhury, Tanaka, Nakayama, and Shiono. "Copolymerization of Norbornene and Styrene with Anilinonaphthoquinone-Ligated Nickel Complexes." Polymers 11, no. 7 (2019): 1100. http://dx.doi.org/10.3390/polym11071100.

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Poly(norbornene-co-styrene)s were synthesized by the use of anilinonaphthoquinone-ligated nickel complexes [Ni(C10H5O2NAr)(Ph)(PPh3): 1a, Ar = C6H3-2,6-iPr; 1b, Ar = C6H2-2,4,6-Me; 1c, Ar = C6H5] activated with modified methylaluminoxane (MMAO) or B(C6F5)3 in toluene. The effects of the cocatalysts were more significant than those of the nickel complexes, and MMAO gave higher activity than B(C6F5)3. The structural characterizations of the products indicated the formation of statistical norbornene copolymers. An increase of the styrene ratio in feed led to an increase in the incorporated styrene (S) content of the resulting copolymer. The molecular weight of the copolymer decreased with increasing the S ratio in feed at 70 °C. The copolymerization activity, using MMAO as a cocatalyst, decreased with lowering of the temperature from 70 to 0 °C, accompanied by an increase in the molecular weight of the copolymer. The S incorporation up to 59% with Mn of 78,000 was achieved by the 1b-B(C6F5)3 catalytic system. The glass transition temperatures of the norbornene (N)/S copolymers determined by differential scanning calorimetry, decreased from 329 to 128 °C according to the S content.

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MA, HUI-RU, JIAN-GUO GUAN, and RUN-ZHANG YUAN. "SELF-ASSEMBLY MORPHOLOGIES AND ELECTRORHEOLOGICAL PROPERTIES OF POLYANILINE-POLY(ETHYLENE GLYCOL)- POLYANILINE TRIBLOCK COPOLYMERS." International Journal of Modern Physics B 21, no. 28n29 (2007): 4961–66. http://dx.doi.org/10.1142/s021797920704589x.

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The self-assembly properties and ER effects of the Polyaniline-Poly(ethylene glycol)-Polyaniline (PAn-PEG-PAn) triblock copolymers were studied in this paper. The results indicate that with the increase of solubility parameter of the solvent, PAn-PEG-PAn copolymers form into different morphologies of spheriods, vesicles and rods. PAn-PEG-PAn copolymers with vesicles morphology show the highest polarization strength, while those with rods have the most rapid polarization rate. Among the PAn-PEG-PAn copolymers of different morphologies, the PAn-PEG-PAn copolymer vesicles show the strongest ER effect.

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Dissertations / Theses on the topic "Statistical copolymer"

1

Watson, Linda M. "Miscibility studies in statistical copolymer and terpolymer blends." Thesis, Heriot-Watt University, 1994. http://hdl.handle.net/10399/1393.

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Gazuz, Igor, and Jens-Uwe Sommer. "Evidence of random copolymer adsorption at fluctuating selective interfaces from Monte-Carlo simulation studies." Royal Society of Chemistry, 2014. https://tud.qucosa.de/id/qucosa%3A36400.

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We perform Monte-Carlo simulations of a binary, strongly separated mixture of A- and B-type homopolymers with some amount of random AB copolymers added. The interface is analyzed and the interface tension is calculated using the model of capillary waves. We can clearly demonstrate that random copolymers are localized at real, fluctuating interfaces between incompatible polymer species and micellization is not favored over adsorption. Our study proves that random copolymers are potential candidates for compatibilization of polymer-polymer mixtures. By simulating random copolymers in a one-component bulk and comparing their free energy to the copolymers adsorbed at the two-phase interface we show that the adsorption is thermodynamically stable. We use scaling arguments developed for ideal and non-fluctuating interfaces to rationalize the simulation results and we calculate the reduction of interface tension with increasing amount of the adsorbed copolymers.

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3

Moghaddam, Maria Sabaye. "Statistical mechanics of the adsorption of copolymers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ63603.pdf.

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Uan-Zo-li, Julie Tammy. "Morphology, Crystallization and Melting Behavior of Propylene-Ethylene Statistical Copolymers." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29143.

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In this work the morphology, crystallization and melting behavior of novel Dow Chemical propylene-ethylene copolymers were investigated. The incorporation of ethylene units into a polypropylene chain resulted in the decrease in crystallization, melting and glass transition temperatures and overall crystallinity. Based on the shape of heat capacity curves and the dependence of the melting temperature offset on ethylene content, it was concluded that copolymers prepared using different catalyst systems exhibited different ethylene sequence length distributions. The behavior of Dow Chemical propylene-ethylene copolymers was compared to that of copolymers prepared using traditional metallocene and Ziegler-Natta catalysts. The catalyst system used in the preparation of these new copolymers is similar to a metallocene catalyst system. It was demonstrated that ethylene defects are partially included in the polypropylene crystal. The thermodynamic heat of fusion at the equilibrium melting temperature decreased by 44% with an increase in ethylene concentration from 0 mol% to 21.2 mol%. On the basis of calorimetric and density data, the inclusion model based on the Sanchez-Eby crystallization theory was shown to be applicable for the evaluation of the degree of crystallinity. At the same time, inadequacies were found in application of the rigid amorphous fraction model to these copolymers. The formation of gamma-phase crystals was shown to be favored by both an increase in the ethylene content and a decrease in the crystallization rate. Increase in the ethylene content was shown to lead to a decrease in the density, length and thickness of alpha-phase crystals. It was also demonstrated that the cross-hatching morphology is present in all propylene-ethylene copolymers.<br>Ph. D.

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Yang, Yiming. "Tough Stretchable Physically-Crosslinked Hydrogel Fiber Mats from Electrospun Statistical Copolymers." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1473179327.

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6

Pisipati, Padmapriya. "Synthesis and Characterization of Solution and Melt Processible Poly(acrylonitrile-co-methylacrylate) statistical copolymers." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/73150.

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Polyacrylonitrile (PAN) and its copolymers are used in a wide variety of applications ranging from textiles to purification membranes, packaging material and carbon fiber precursors. High performance polyacrylonitrile copolymer fiber is the most dominant precursor for carbon fibers. Synthesis of very high molecular weight poly(acrylonitrile-co-methyl acrylate) copolymers with weight average molecular weights of at least 1.7 million g/mole were synthesized on a laboratory scale using low temperature, emulsion copolymerization in a closed pressure reactor. Single filaments were spun via hybrid dry-jet gel solution spinning. These very high molecular weight copolymers produced precursor fibers with tensile strengths averaging 954 MPa with an elastic modulus of 15.9 GPa (N = 296). The small filament diameters were approximately 5 'm. Results indicated that the low filament diameter that was achieved with a high draw ratio, combined with the hybrid dry-jet gel spinning process lead to an exponential enhancement of the tensile properties of these fibers. Carbon fibers for polymer matrix composites are currently derived from polyacrylonitrile copolymer fiber precursors where solution spinning accounts for ~40 % of the total fiber production cost. To expand carbon fiber applications into the automotive industry, the cost of the carbon fiber needs to be reduced from $8 to ~$3-5. In order to develop an alternative melt processing route several benign plasticizers have been investigated. A low temperature, persulfate-metabisulfite initiated emulsion copolymerization was developed to synthesize poly(acrylonitrile-co-methyl acrylate) copolymers with acrylonitrile contents between 91-96 wt% with a molecular weight range of 100-200 kg/mol. This method was designed for a potential industrial scale up. Furthermore, water was investigated as a potential melting point depressant for these copolymers. Twenty-five wt% water lead to a decrease in the Tm of a 93/7 wt/wt % poly(acrylonitrile-co-methyl acrylate) of Mw = 200 kg/mol to 160 0C as measured via DSC. Glycerin, ethylene glycol and glycerin/water combinations were investigated as potential plasticizers for high molecular weight (~200,000 g/mol), high acrylonitrile (93-96 mole:mole %) content poly(acrylonitrile–co-methyl acrylate) statistical copolymers. Pure glycerin (25 wt %) induced crystallization followed by a reduced "Tm" of about 213 °C via DSC. However this composition did not melt process well. A lower MW (~35 kg/mol) copolymer did extrude with no apparent degradation. Our hypothesis is that the hydroxyl groups in glycerin (or water) disrupt the strong dipole-dipole interactions between the chains enabling the copolymer endothermic transition (Tm) to be reduced and enable melting before the onset of degradation. Additionally high molecular weight (Mw = 200-230 kg/mol) poly(acrylonitrile–co-methyl acrylate) copolymers with lower acrylonitrile content (82-85 wt %) were synthesized via emulsion copolymerization and successfully melt pressed. These materials will be further investigated for their utility in packaging applications.<br>Ph. D.

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Kumar, Amit. "Morphology, Crystallization and Melting Behavior of Statistical Copolymers of Propylene with Ethylene, 1-Butene, 1-Hexene and 1-Octene." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33563.

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In this thesis, the morphology, crystallization and melting behavior of polypropylene copolymers (propylene/ethylene, propylene/1-butene, propylene/1-hexene and propylene/1-octene) has been examined. The multiple melting behavior has been correlated with the presence of alpha and gamma phases and with the occurrence of cross-hatching morphology. The Crystallization and melting behavior of propylene/ethylene and propylne/1-butene are qualitatively similar and compatible with the expectations that the ethylene and butene comonomers are partly included in the propylene lattice. Propylene/1-hexene and propylene/1-octene copolymers exhibit remarkably similar behavior and morphologies consistent with the expectations that the hexene and the octene comonomers are rigorously excluded from the crystal lattice. The origin and the crystallization time dependence of the multiple melting behavior is very different for these two pairs of copolymers. For PE and PB it is consistent with the melting of parent a-phase lamellae and alpha or gamma-phase daughter lamellae. For PH and PO copolymers it is very similar to that observed for ethylene-octene(EO) and ethylene-styrene(ES) copolymers and compatible with the melting of primary lamellae and secondary mosaic or fringed micellar structures.<br>Master of Science

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Twum, Eric Barimah. "Multidimensional NMR Characterization of Polyvinylidene Fluoride (PVDF) and VDF-Based Copolymers and Terpolymers." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367267597.

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Bier, Frédéric. "Conception et synthèse d’une matrice polymère thermoplastique pour l’obtention de matériaux composites recyclables, résistants au feu et utilisables dans l’industrie." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0040.

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De nouvelles matrices thermoplastiques à base de poly(méthacrylate de méthyle) (PMMA) pouvant entrer dans la composition de matériaux composites ont été synthétisées et caractérisées du point de vue de leur température de transition vitreuse (par calorimétrie différentielle à balayage) et de leur dégradation thermique (par analyse thermogravimétrique et par microcalorimétrie). La stratégie suivie était d’incorporer dans les chaînes de PMMA des unités de répétition comportant un groupement latéral phosphoré retardateur de flamme via une copolymérisation radicalaire du MMA avec un monomère phosphoré. Un ensemble de monomères phosphorés retardateurs de flamme ont été synthétisés à partir de l’oxyde de 9,10-dihydro-9-oxa-10-phosphaphenanthrène-10 (DOPO) en faisant varier la nature de la fonction polymérisable (styrénique, acrylique, méthacrylique), la nature de l’atome lié au phosphore (oxygène, carbone, azote) et la longueur du bras espaceur. Nous avons montré qu’en adaptant la structure et la quantité des unités de répétition phosphorées, la température de transition vitreuse du matériau était maintenue proche de celle du PMMA alors que la dégradation thermique des matériaux était déplacée vers de plus hautes températures. Comparativement les mélanges physiques de PMMA et de DOPO avec une même teneur en élément phosphore présentent une température de transition vitreuse significativement plus basse<br>Novel poly(methyl methacrylate) (PMMA) thermoplastic matrices which can be used in the elaboration of composite materials have been synthesized and characterized from the point of view of their glass transition temperature (by differential scanning calorimetry) and their thermal degradation (by thermogravimetric analysis and by pyrolysis combustion flow calorimetry). The strategy followed was to incorporate in the PMMA chains repeat units comprising a flame retardant phosphorous side group via a radical copolymerization of MMA with a phosphorus-containing monomer. A set of phosphorus-containing flame retardant monomers has been synthesized from 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10 oxide (DOPO) by varying the nature of the polymerizable function (styrenic, acrylic, methacrylic), the nature of the atom bound to the phophore (oxygen, carbon, nitrogen) and the length of the spacer arm. We have shown that by adapting the structure and the quantity of the phosphorus repeating units, the glass transition temperature of the material was kept close to that of the PMMA while the thermal degradation of the materials was shifted to higher temperatures. Comparatively, physical blends of PMMA and DOPO with equivalent phosphorus contents exhibited significantly lower glass transition temperatures

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Mezzasalma, Leila. "A nature « copy-paste » approach for an efficient metal-free polymerization route." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0002.

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Le dibenzoylméthane (DBM) a été étudié comme catalyseur pour la copolymérisation par ouverture de cycle du L-lactide (LA) et du ε-caprolactone (CL) amorcée par des alcools en masse à haute température. Des copolymères présentant des structures gradient à statistique ont été formés. L’étude cinétique a mis en évidence que le DBM est un faible activateur de bout de chaîne et de monomère, l’apparente accélération de la copolymérisation étant due à la formation in situ d’acides carboxyliques catalysant la réaction à leur tour. L’acide benzoïque (BA), un acide carboxylique faible, a ensuite été étudié pour les homopolymérisations par ouverture de cycle du LA et du CL amorcées par des alcools en masse à haute température. L’étude cinétique a mis en évidence un mécanisme bifonctionnel et une différence de réactivité des deux monomères en présence de BA validés par des calculs théoriques. Une gamme de copolymères statistiques présentant différentes compositions ont été synthétisés par copolymérisation par ouverture de cycle du LA et CL catalysé par BA et amorcé par différents alcools en masse à haute température. Finalement, plusieurs catalyseurs organiques ont été testés pour la copolymérisation du LA et CL<br>Dibenzoylmethane has been investigated as organocatalyst for the bulk ring-opening copolymerization (ROcP) of L-Lactide (LA) and ε-caprolactone (CL) initiated by alcohols at high temperature. Copolymer presenting a gradient to statistical structure has been generated. Kinetic study has pointed out that DBM is a poor chain end and monomer activator, the apparent acceleration of the ROcP process may be due to the in situ generation of carboxylic acids which can catalyze the reaction as well. Benzoic acid, a weak carboxylic acid, has then been investigated for the efficient bulk ring-opening polymerization (ROP) of LA and CL initiated by various alcohols at high temperature. The kinetic study has pointed out that LA and CL have different reactivity in presence of benzoic acid which acts as a bifunctional activator. The experimental results were supported by computational calculations. An array of statistical copolymer of varying LA/CL compositions have been synthesized by ROcP of LA and CL catalyzed by BA in presence of various alcohol as initiators in bulk at high temperature. Finally, miscellaneous organocatalysts have been tested for the ROcP of LA and CL

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Books on the topic "Statistical copolymer"

1

Davis, Kelly A. Statistical, gradient, and segmented copolymers by controlled/living radical polymerizations. Springer, 2002.

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Matyjaszewski, Krzysztof, and Kelly A. Davis. Statistical, Gradient, Block and Graft Copolymers by Controlled/Living Radical Polymerizations. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45806-9.

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Ashton, Robin Charles. Synthesis of [alpha],[omega]-telechelic oligomers by the ozonolysis of styrene/diene, maleimide/diene and maleimide/acetylene statistical copolymers. University of Manchester, 1996.

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Moghaddam, Maria Sabaye. Statistical mechanics of the adsorption of copolymers. 2001.

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Davis, Kelly A. Statistical, Gradient, Block and Graft Copolymers by Controlled/Living Radical Polymerizations. Springer, 2012.

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Davis, Kelly A., and Krzysztof Matyjaszewski. Statistical, Gradient, Block and Graft Copolymers by Controlled/Living Radical Polymerizations. Springer London, Limited, 2006.

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Harkless, Curtis Ray. An X-ray scattering study of ordering in block copolymers. 1990.

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Book chapters on the topic "Statistical copolymer"

1

Herbert, I. R. "Statistical analysis of copolymer sequence distribution." In NMR Spectroscopy of Polymers. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2150-7_2.

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Owen, Allen G., Hao Su, Angelique Montgomery, Robert Douglas, and Subhadra Gupta. "A Statistical Optimization of Co/Pd Multilayers Patterned via Block Copolymer Lithography." In TMS2015 Supplemental Proceedings. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119093466.ch38.

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Owen, Allen G., Hao Su, Angelique Montgomery, Robert Douglas, and Subhadra Gupta. "A Statistical Optimization of Co/Pd Multilayers Patterned via Block Copolymer Lithography." In TMS 2015 144th Annual Meeting & Exhibition. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-48127-2_38.

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Kahramanov, N. T., N. B. Arzumanova, I. V. Bayramova, and J. N. Gahramanly. "Structure and Properties of Polymer Composites Based on Statistical Ethylene-Propylene Copolymer and Mineral Fillers." In Composite Materials for Industry, Electronics, and the Environment. Apple Academic Press, 2019. http://dx.doi.org/10.1201/9780429457937-3.

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Kahramanov, N. T., N. B. Arzumanova, I. V. Bayramova, and J. N. Gahramanly. "Structure and Properties of Polymer Composites Based on Statistical Ethylene-Propylene Copolymer and Mineral Fillers." In Science and Technology of Polymers and Advanced Materials. Apple Academic Press, 2019. http://dx.doi.org/10.1201/9780429425301-4.

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Hu, Wenbing, Vincent B. F. Mathot, Rufina G. Alamo, Huanhuan Gao, and Xuejian Chen. "Crystallization of Statistical Copolymers." In Polymer Crystallization I. Springer International Publishing, 2016. http://dx.doi.org/10.1007/12_2016_349.

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Klumperman, Bert. "Statistical, Alternating and Gradient Copolymers." In Macromolecular Engineering. Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527631421.ch19.

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Wanner, Thomas. "Topological Analysis of the Diblock Copolymer Equation." In Springer Proceedings in Mathematics & Statistics. Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56104-0_2.

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Van der Haegen, R. "Liquid-Liquid Phase Separation in Mixtures of Statistical Copolymers." In Integration of Fundamental Polymer Science and Technology. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4185-4_7.

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Robert, C., C. Bunel, M. A. Dourges, J. P. Vairon, and F. Boué. "Transparent Multiphasic Oxygen Permeable Hydrogels Based on Siloxanic Statistical Copolymers." In Macromolecular Engineering. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1905-8_9.

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Conference papers on the topic "Statistical copolymer"

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Kodama, Hiroya. "Mean-field studies of block copolymer/homopolymers blends." In Third tohwa university international conference on statistical physics. AIP, 2000. http://dx.doi.org/10.1063/1.1291561.

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Gathman, Tyler, Jamee Schoephoerster, Ranveer Vasdev, Stephanie Liffland, and Derek Batiste. "Evaluation of Sustainable P4MCL/PLLA Block Copolymers as PVC Replacement in Medical Plastics." In 2022 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/dmd2022-1051.

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Abstract Aliphatic polyesters are potential sustainable alternatives to PVC for use in medical devices, such as IV bags. Our candidate replacement of PVC-based IV bags use P4MCL, a sustainable polymer with demonstrated uses in mechanically robust materials. The goal of our project was to compare the mechanical and biocompatibility characteristics of P4MCL/PLLA star block copolymer TPEs with commercial PVC-based IV bags. P4MCL/PLLA TPEs were synthesized according to previously reported methods. Uniaxial tensile testing was conducted pre- and post-autoclave. Impact and tear resistance testing was performed on non-autoclaved specimens according to ASTM standards. Cytotoxicity was examined using NIH 3T3 Fibroblasts with an AlamarBlue assay. A student’s t-test was used to compare results with statistical significance of P &lt; 0.05. PVC tended to be stiffer but P4MCL/PLLA was more extensible. The tensile properties for the P4MCL-based material did not change after autoclaving. When compared to PVC-based IV bags, the P4MCL/PLLA TPE demonstrated a lower peak force and average force but a greater elongation at break and total absorbed energy (P&lt;0.05). P4MCL/PLLA, unlike PVC-based materials with DEHP plasticizer, was non-cytotoxic. In summary, P4MCL/PLLA has desirable mechanical and biocompatibility advantages compared to PVC making the material a potential sustainable alternative for medical grade plastics.

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Aksimentiev, Aleksij. "Phase behavior of gradient copolymers." In Third tohwa university international conference on statistical physics. AIP, 2000. http://dx.doi.org/10.1063/1.1291523.

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Schabas, Greg, Matthew G. Moffitt, and David Sinton. "Microfluidic Assembly of Quantum Dot Micelles." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42300.

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The controlled self-assembly of polymer-stabilized CdS quantum dot nanoparticles into quantum dot compound micelles (QDCMs) using microfluidics is demonstrated. In a flow-focusing configuration, water is introduced to a blend solution of block copolymer-stabilized quantum dots with amphiphilic block copolymer stabilizing chains. QDCM assembly via initial phase separation and subsequent agglomeration continue until a downstream quench step. Control over mean particle size and size distribution characteristics is demonstrated via both inlet concentrations and flow rate. The QDCMs assembled through this method are stable in aqueous solutions, and show internal and external structure in keeping with previous assembly methods. The on-chip evolution of QDCM formation and growth is resolved through fluorescence scattering. Particle size distributions and associated statistics are determined through off-chip analysis.

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Zhang, Jin Z., Melissa A. Kreger, Gerrit Klaerner, M. Kreyenschmidt, Robert D. Miller, and J. Campbell Scott. "Femtosecond study of exciton dynamics in polyfluorene statistical copolymers in solutions and thin films." In Optical Science, Engineering and Instrumentation '97, edited by Z. Valy Vardeny and Lewis J. Rothberg. SPIE, 1997. http://dx.doi.org/10.1117/12.284150.

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