Preparation and properties of a novel biodegradable ethyl cellulose grafting copolymer with poly(p-dioxanone) side-chains

Zhu, Jiang; Dong, Xue-Ting; Wang, Xiuli; Wang, Yu‐Zhong

doi:10.1016/j.carbpol.2009.11.027

Cited by 64 publications

(16 citation statements)

References 38 publications

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“…Currently, modifying polysaccharides via ROGP is one of the most important strategies to improve their solubility, thermal processability, and compatibility. Previous studies were mainly conducted on cellulose with a metal-based catalyst like Sn(oct) 2 [ 26 , 30 ]. However, the residual metals of a catalyst may affect the applications of products in biomedical materials, food packing, or electronic areas [ 47 , 48 ].…”

Section: Resultsmentioning

confidence: 99%

“…However, PPDO is not yet considered as a direct replacement for conventional synthetic polymers due to its high cost of production [ 16 ]. Recent advances in polymerization techniques have paved the way for a more economic production of PPDO, which can broaden its utilization [ 26 , 27 , 28 ]. The graft polymerization of PPDO onto renewable lignocellulose is an important area in the application of PPDO, as well as a practical way to alter the chemical properties of lignocellulose [ 29 , 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

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Organic Catalysis for Ring-Opening Graft Polymerization of p-Dioxanone with Xylan in Ionic liquid

et al. 2017

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Abstract:Recently, organic catalysis has become a powerful alternative to the use of more traditional metal-based catalysts. In this study, 4-dimethylaminopyridine (DMAP), 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), and 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) were applied to mediate the ring-opening graft polymerization (ROGP) of p-dioxanone (PDO) with xylan-based hemicelluloses in ionic liquid 1-butyl-3-methylimidazolium chloride ([Bmim]Cl). Excellent control of the molar ratio of the catalyst to anhydroxylose units (AXU) in xylan was found for a good tuning of the weight percent gain (WPG) of xylan-graft-poly(p-dioxanone) (xylan-g-PPDO) copolymers. As a result, the maximum WPG of xylan-g-PPDO copolymers was 431.07% (DMAP/AXU of 2/1), 316.72% (DBU/AXU of 0.2/1), and 323.15% (TBD/AXU of 0.2/1), respectively. The structure of xylan-g-PPDO copolymers was characterized with FT-IR and NMR. The thermal properties of copolymers were investigated using thermogravimetric analysis (TGA/DTG) and differential scanning calorimetry (DSC), and a significant difference was observed regarding the transition temperature (T g ), melting temperature (T m ), and crystallization temperature (T c ).

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Organic Catalysis for Ring-Opening Graft Polymerization of p-Dioxanone with Xylan in Ionic liquid

et al. 2017

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“…Indiscriminate use of fossil-based and non-degradable polymers has brought about significant pollutions on the environment, which has led to a renewed and increased interest in polysaccharides like cellulose, starch and chitin (S. Wang, Lu, & Zhang, 2016;Zeng, He, Li, & Wang, 2012;Zhang, Wang, Zhao, & Wang, 2012;Zhang, Zhang, Wang, Chen, & Wang, 2009;Zhu, Dong, Wang, & Wang, 2010).…”

Section: Introductionmentioning

confidence: 99%

Morphology, crystallization and rheological behavior in poly(butylene succinate)/cellulose nanocrystal nanocomposites fabricated by solution coagulation

Wang

et al. 2017

Carbohydrate Polymers

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Nanocomposites consisting of poly(butylene succinate) (PBS) and cellulose nanocrystals (CNC) were fabricated by solution coagulation method. Morphology analysis indicated that CNC dispersed well in PBS matrix and rheological analysis suggested that PBS and CNC showed strong interactions. Thermal analysis indicated that the nanocomposites showed slightly increased glass transition temperature, significantly enhanced crystallization temperature and different melting behavior, compared to neat PBS. Study on crystallization indicated that small loading of CNC could significantly increase overall crystallization rate of PBS, meanwhile the crystallization mechanism and crystal structure remained unchanged. The significant enhancement in overall crystallization was attributed to the increased nucleation ability by incorporation of well dispersed CNC nanoparticles. Tensile testing indicated that the tensile strength and modulus were gradually improved with increasing CNC content, while the elongation at break decreased and even brittle fracture occurred when the content of CNC increased to 1.0wt%.

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“…The increasing interest in biodegradable polymer is not only relied to environmental concerns, like waste management, but also on the fact that they can be good candidates for replacing traditional materials, as metals and ceramics, for biomedical applications [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Compatibilization on Poly-ε-Caprolactone Grafting onto Poly(ethylene-co-vinyl alcohol)

et al. 2011

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Abstract:The non-miscibility of the reactants during solvent free poly-ε-caprolactone grafting onto poly(ethylene-co-vinyl alcohol) (EVOH) dramatically affects reaction kinetics. Different solutions were proposed to accelerate the exchange reactions between poly(ethylene-co-vinyl alcohol) and poly-ε-caprolactone. Reactions were conducted in a batch reactor or a mini twin-screw extruder. The addition of a poly(ethylene-co-vinyl alcohol)-g-poly-ε-caprolactone copolymer increased the compatibility of the reactants and led to a higher reaction rate. This copolymer was either prepared separately and added at the reaction beginning or prepared in situ grafting caprolactone from EVOH. The reactive system evolution was analyzed using molar mass evolution, microstructure characterization, thermal properties and the reactive blend morphology. The compatibilization effect combined with optimized reaction conditions, such as concentration and nature of catalyst and temperature, resulted in an important increase in reaction rates. Among the tested catalysts, 1,5,7-Triazabicyclo [4.4.0]dec-5-ene was a more efficient catalyst for grafting reactions than Tin (II) 2-ethylhexanoate.

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Preparation and properties of a novel biodegradable ethyl cellulose grafting copolymer with poly(p-dioxanone) side-chains

Cited by 64 publications

References 38 publications

Organic Catalysis for Ring-Opening Graft Polymerization of p-Dioxanone with Xylan in Ionic liquid

Organic Catalysis for Ring-Opening Graft Polymerization of p-Dioxanone with Xylan in Ionic liquid

Morphology, crystallization and rheological behavior in poly(butylene succinate)/cellulose nanocrystal nanocomposites fabricated by solution coagulation

Effect of Compatibilization on Poly-ε-Caprolactone Grafting onto Poly(ethylene-co-vinyl alcohol)

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