Готові списки джерел за темами / Hydrophilic cellulose matrix

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Добірка наукової літератури з теми "Hydrophilic cellulose matrix"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Hydrophilic cellulose matrix"

Rama Rao, Tadikonda. "HYDROPHILIC MATRIX TABLETS AS ORAL CONTROLLED DRUG DELIVERY SYSTEMS IN 20TH CENTURY: A REVIEW." International Journal of Advanced Research 12, no. 08 (2024): 1372–93. http://dx.doi.org/10.21474/ijar01/19381.

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Matrix systems are easy to formulate compared to other controlled release dosage forms. The manufacture of matrix tablets involves the direct compression of blend of drug, retardant material and additives to form a tablet in which drug is embedded in a matrix core of the retardant. Alternatively, retardant-drug blends may be granulated prior to compression. Of the three classes of retardant material used to formulate matrix tablets, polymers that form hydrophilic matrices are attracting the attention of pharmaceutical technologists. These polymers include Methyl cellulose (MC), Hydroxy ethyl c

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Aravind, T., Mohd Shaikhul Ashraf, Rajesh A. S., et al. "Study of Progress on Nanocrystalline Cellulose and Natural Fiber Reinforcement Biocomposites." Journal of Nanomaterials 2022 (October 4, 2022): 1–16. http://dx.doi.org/10.1155/2022/6519480.

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Cellulosic biomass hydrolysis yields a nanoscale substance known as nanocrystalline cellulose (NCC). Gel, liquid, or powder is adaptable to a variety of uses. Nanocrystalline cellulose has unique renewability, biodegradability, and mechanical and physicochemical qualities, and abundance boosts the material’s mechanical strength by many orders of magnitude when introduced into the material matrix (polymer, ceramic, or metal). Nanocrystalline cellulose is not related with any serious environmental issues because it is a natural substance. The progress of this biomaterial as a green and renewable

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Bourlinos, Athanasios B., Ioannis Panagiotopoulos, Dimitrios Niarchos, and Dimitrios Petridis. "Hydrophilic Co–Pt Alloy Nanoparticles: Synthesis, Characterization, and Perspectives." Journal of Materials Research 19, no. 4 (2004): 1227–33. http://dx.doi.org/10.1557/jmr.2004.0159.

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Hydrophilic Co–Pt alloy nanoparticles nearing the equiatomic ratio and dispersedin water-soluble sodium carboxymethyl cellulose were synthesized by the aqueous reduction of CoCl2⋅6H2O and [Pt(NH3)4]Cl2⋅H2O with NaBH4 in presence of the cellulosic derivative. The as-received Co–Pt nanoparticles in the cellulosic matrix possess a disordered fcc structure that, upon calcination under an Ar atmosphereand carbonization of the cellulosic mantle of the particles, transformed to an ordered fcc phase. Both as-synthesized and calcined samples are magnetically soft at room temperature and exhibit a stron

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K., Rekha Rani* Y. Navya Reddy R. Mohana Priya. "FORMULATION AND EVALUATION OF SUSTAINED RELEASE DOSAGE FORM OF KETOPROFEN." indo American Journal of Pharmaceutical Sciences 04, no. 05 (2017): 1384–90. https://doi.org/10.5281/zenodo.804916.

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Sustained release Ketoprofen matrix tablets were prepared by direct compression method. The nature of the polymer influences the physical and release characteristics of the matrix tablet. The hydrophobic polymer, Ethyl cellulose has retarded the drug release from the tablet and the hydrophilic polymer, HPMC (15 cps) has release the drug. While making the combination of both hydrophilic and hydrophobic polymers i.e HPMC and Ethylcellulose with optimized ratio (F7) leads to sustained release of drug from matrix tablet for 12 hours was observed Key words: Ketoprofen, HPMC (15 cps), Ethyl cellulos

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Kenneth, Chinedu Ugoeze Nkemakolam Nwachukwu *. Favour Chiamaka Anumaka Goodness Nwovuhoma Ezioka. "STUDIES ON A HYDROPHILIC CELLULOSE MATRIX DERIVED FROM IPOMOEA BATATAS TUBERS I: PROCESSING AND PHYSICOCHEMICAL PROPERTIES." INDO AMERICAN JOURNAL OF PHARMACEUTICAL RESEARCH 07, no. 08 (2017): 638–45. https://doi.org/10.5281/zenodo.1036538.

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This work was designed to develop a hydrophilic cellulose matrix from the fibre contained in the tubers of Ipomoea batatas and to evaluate its excipient functionality. Starch was filtered from the slurry of milled tubers to obtain the fibre which was dried at 60 o C and pulverised. A 500 g of fibre was submerged in 3.50 % w/v of sodium hypochlorite and blended for 10 min. This was washed with distilled water to a neutral pH, then slurried in 96 % ethanol for 5 min, dried at 60 o C and reduced to 250 μm. The product was coded as I-hydrocel. Its organoleptic, pH, densities, flows, elemental cont

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Qu, Ping, Lu Bai, Yuan Gao, Guo Feng Wu, and Li Ping Zhang. "Compatibilizing Effects of Poly(ethylene Glycol) on PLA/Cellulose Nanowhiskers Composites." Materials Science Forum 675-677 (February 2011): 395–98. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.395.

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One best way to harness the petroleum-based solid wastes is to develop biodegradable materials. Among which, PLA is the most important one, because it is made from renewable plant. But Poly(lactic acid) (PLA) is brittle and low impact resistance. The cellulose nanowhiskers are about 5-40 nm in diameter and the length can be from 100 nm to several micrometers depending on the source of cellulose and the processing technology. The cellulose nanowhiskers can act as efficient reinforcement because of the high aspect ratios, important surface areas and high modulus. The celluloses nanowhiskers are

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Gaware, Ravi U., Gayatri R. Waykar, Madhuri K. Yewale, Rutuja B. Mhaske, and Poonam S. Mhaske. "Formulation and In-vitro evaluation of sustained release matrix tablet of Metformin hydrochloride." Journal of Drug Delivery and Therapeutics 9, no. 3 (2019): 95–98. http://dx.doi.org/10.22270/jddt.v9i3.2606.

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The low bioavailability and short half-life of Metformin hydrochloride (MH) make the development of sustained-release forms desirable. Present work involves preparation and optimization of sustained release matrix tablet of MH by direct compression method using HPMC K 100 and ethyl cellulose as a matrix forming polymer. Avicel was added as a direct compaction vehicle to improve the compaction behavior of Metformin which otherwise exhibits poor compaction behavior which again is further increased by its relatively high dose. Hydrophilic matrix of HPMC alone resulted in initial burst of Metformi

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M.Sreenivas, Varma* T.Mallika S.Spandana. "FORMULATION, DEVELOPMENT AND EVALUATION OF EXTENDED RELEASE MATRIX TABLETS OF GLIPIZIDE." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 09 (2018): 9091–105. https://doi.org/10.5281/zenodo.1434252.

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Glipizide is used for treatment of type 2 diabetes mellitus. It is IInd generation sulfonylurea derivative. It is BCS class 2 drug and has a half life of 2-4 hours. The usual dosage is 2.5, 5 and 10 mg twice or thrice a day. To reduce the frequency of administration and to improve the patient compliance, a once daily extended release formulation of Glipizide is desirable. Hence selection of rate controlling excipient is necessary to achieve a constant in vivo input of drug. Hence in the present work an attempt has been made to develop extended release matrix tablets of Glipizide using hydrophi

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Qu, Ping, Yuan Gao, Guo-feng Wu, and Li-ping Zhang. "Nanocomposites of poly(lactic acid) reinforced with cellulose nanofibrils." BioResources 5, no. 3 (2010): 1811–23. http://dx.doi.org/10.15376/biores.5.3.1811-1823.

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A chemo-mechanical method was used to prepare cellulose nanofibrils dispersed uniformly in an organic solvent. Poly(ethylene glycol) (PEG 1000) was added to the matrix as a compatibilizer to improve the interfacial interaction between the hydrophobic poly(lactic acid) (PLA) and the hydrophilic cellulose nanofibrils. obtained by solvent casting methods from N,N-Dimethylacetamide (DMAc) were characterized by tensile testing machine, atomic force microscope (AFM), scanning electron microscope (SEM), and Fourier transform infrared spectroscopy (FT-IR). The tensile test results indicated that, by a

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Patel, Rupal, Viness Pillay, Yahya E. Choonara, and Thirumala Govender. "A Novel Cellulose-Based Hydrophilic Wafer Matrix for Rapid Bioactive Delivery." Journal of Bioactive and Compatible Polymers 22, no. 2 (2007): 119–42. http://dx.doi.org/10.1177/0883911506076045.

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Частини книг з теми "Hydrophilic cellulose matrix"

Wan Ishak, Wan Hafizi, and Ishak Ahmad. "Cellulose Nanocrystals-Based Hydrogels for Drug Delivery." In Functional Bio-based Materials for Regenerative Medicine: From Bench to Bedside (Part 2). BENTHAM SCIENCE PUBLISHERS, 2024. http://dx.doi.org/10.2174/9789815179330124010007.

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Recently, cellulose nanocrystals (CNC) have gained attention from researchers around the world due to their favourable properties such as low cost, nontoxicity, biodegradability, biocompatibility, and as small, strong hydrophilic materials, which render them favourable candidates for the preparation of hydrogels. The incorporation of CNC within a hydrogel matrix enables the hydrogel to sustain its shape during swelling-deswelling. Besides absorbing and retaining large amounts of water, hydrogels also respond to specific external environmental factors, such as temperature, pH, the presence of i

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Fadzullah, S. H. Sheikh Md, and Zaleha Mustafa. "Fabrication and Processing of Pineapple Leaf Fiber Reinforced Composites." In Materials Science and Engineering. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1798-6.ch035.

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There is an increasing interest worldwide in the use of Pineapple Leaf Fibers (PALF) as reinforcements in polymer composites, since this type of natural fiber exhibit attractive features such as superior mechanical, physical and thermal properties, thus offer potential uses in a spectrum of applications. PALF contains high cellulose content (between 70-82%) and high crystallinity. However, being hydrophilic, it posed a compatibility issue particularly in a hydrophobic polymeric matrix system. Thus, their shortcoming need to be addressed to ensure good interfacial bonding at the fibers/matrix i

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"Hydrophilic Cellulose Derivatives as Drug Delivery Carriers: I nfluence of Substitution Type on the Properties of Compressed Matrix Tablets." In Handbook of Pharmaceutical Controlled Release Technology. CRC Press, 2000. http://dx.doi.org/10.1201/9781482289985-6.

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Тези доповідей конференцій з теми "Hydrophilic cellulose matrix"

Sun, Jiaqi, and XinRong Zhang. "Molecular Mechanism of Water Transport Through Cellulose Cell Wall Matrix." In ASME 2019 6th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/mnhmt2019-4031.

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Abstract In plant living tissue, water can flow across cells by different paths, through cell membranes (transcellular path) and plasmodesmata (symplastic path), or through the continuous cell walls matrix (apoplastic path). The relative contribution of these three paths in living tissue is currently unclear and could vary according to species, tissue developmental stage or physiological conditions. Experiments suggested that apoplastic water movement predominates during transpiration. The objective of this study was to investigate the hydraulic process of cellulose cell wall pathway. The effe

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"Effect of Surface Treated Biopolymer on Curing Behavior and Tensile Properties of Natural Rubber Composites." In Polymers/Composites/3Bs Materials 2023 International Joint Conference. SETCOR Conferences and Events, 2024. http://dx.doi.org/10.26799/cp-polymers-composites-3bsmaterials-2023/1.

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The growing demand for environmentally friendly materials has prompted several researchers to explore naturally occurring biopolymers for potential applications in a variety of fields. Cellulose is a biopolymer formed by the repeated joining of D-glucose building blocks and is characterized by its hydrophilicity, broad chemical modification capacity, biodegradability, and the formation of versatile morphologies of semicrystalline fibers; However, the interactions between the cellulose and the polymer matrix are limited due to the fact that the cellulose is hydrophilic while the matrix is hydro

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Kooshki, Pantea, and Tsz-Ho Kwok. "Review of Natural Fiber Reinforced Elastomer Composites." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-86042.

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This paper is a review on mechanical characteristics of natural fibers reinforced elastomers (both thermoplastics and thermosets). Increasing environmental concerns and reduction of petroleum resources attracts researchers attention to new green eco-friendly materials. To solve these environmental related issues, cellulosic fibers are used as reinforcement in composite materials. These days natural fibers are at the center of attention as a replacement for synthetic fibers like glass, carbon, and aramid fibers due to their low cost, satisfactory mechanical properties, high specific strength, r

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