Preparation of polyvinyl alcohol hydrogel by twin-serew extrusion and its characterization

Kai Zheng; Ji Yu He; Dan Ping Chen; Rong Jie Yang

Preparation of polyvinyl alcohol hydrogel by twin-serew extrusion and its characterization

Kai Zheng^*, Ji Yu He, Dan Ping Chen, Rong Jie Yang

^*此作品的通讯作者

材料学院

Beijing Institute of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

2 引用（Scopus）

摘要

Two kinds of polyvinyl alcohol (PVA) hydrogels (40wt% PVA) were prepared by twin-screw extruder and following repetitively freezing-thawing processes. Static and dynamic mechanical performances were measured by Instron-6022 tensile equipment and DMTA V dynamic thermoanalysis equipment. It is obtained that, firstly, the PVA hydrogels by extrusion have higher tensile strength than PVA hydrogels by the solution casting method. The tensile strength and elastic modulus of PVA/H₂O gel are lower than that of PVA/DMSO/H₂O gel. The effective cross-linking density (v_e) and the molecular mass between crosslinking points (M_c) were calculated. Dynamic mechanical behaviors of the two kinds of PVA/H₂O and PVA/DMSO/H₂O were discussed. The two hydrogels showed different transition processes with temperature.

源语言	英语
页（从-至）	189-192
页数	4
期刊	Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
卷	22
期	5
出版状态	已出版 - 9月 2006

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title = "Preparation of polyvinyl alcohol hydrogel by twin-serew extrusion and its characterization",

abstract = "Two kinds of polyvinyl alcohol (PVA) hydrogels (40wt% PVA) were prepared by twin-screw extruder and following repetitively freezing-thawing processes. Static and dynamic mechanical performances were measured by Instron-6022 tensile equipment and DMTA V dynamic thermoanalysis equipment. It is obtained that, firstly, the PVA hydrogels by extrusion have higher tensile strength than PVA hydrogels by the solution casting method. The tensile strength and elastic modulus of PVA/H2O gel are lower than that of PVA/DMSO/H2O gel. The effective cross-linking density (ve) and the molecular mass between crosslinking points (Mc) were calculated. Dynamic mechanical behaviors of the two kinds of PVA/H2O and PVA/DMSO/H2O were discussed. The two hydrogels showed different transition processes with temperature.",

keywords = "Dynamic mechanical behavior, Hydrogel, Polyvinyl alcohol, Twin-screw extrusion",

author = "Kai Zheng and He, {Ji Yu} and Chen, {Dan Ping} and Yang, {Rong Jie}",

year = "2006",

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language = "English",

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TY - JOUR

T1 - Preparation of polyvinyl alcohol hydrogel by twin-serew extrusion and its characterization

AU - Zheng, Kai

AU - He, Ji Yu

AU - Chen, Dan Ping

AU - Yang, Rong Jie

PY - 2006/9

Y1 - 2006/9

N2 - Two kinds of polyvinyl alcohol (PVA) hydrogels (40wt% PVA) were prepared by twin-screw extruder and following repetitively freezing-thawing processes. Static and dynamic mechanical performances were measured by Instron-6022 tensile equipment and DMTA V dynamic thermoanalysis equipment. It is obtained that, firstly, the PVA hydrogels by extrusion have higher tensile strength than PVA hydrogels by the solution casting method. The tensile strength and elastic modulus of PVA/H2O gel are lower than that of PVA/DMSO/H2O gel. The effective cross-linking density (ve) and the molecular mass between crosslinking points (Mc) were calculated. Dynamic mechanical behaviors of the two kinds of PVA/H2O and PVA/DMSO/H2O were discussed. The two hydrogels showed different transition processes with temperature.

AB - Two kinds of polyvinyl alcohol (PVA) hydrogels (40wt% PVA) were prepared by twin-screw extruder and following repetitively freezing-thawing processes. Static and dynamic mechanical performances were measured by Instron-6022 tensile equipment and DMTA V dynamic thermoanalysis equipment. It is obtained that, firstly, the PVA hydrogels by extrusion have higher tensile strength than PVA hydrogels by the solution casting method. The tensile strength and elastic modulus of PVA/H2O gel are lower than that of PVA/DMSO/H2O gel. The effective cross-linking density (ve) and the molecular mass between crosslinking points (Mc) were calculated. Dynamic mechanical behaviors of the two kinds of PVA/H2O and PVA/DMSO/H2O were discussed. The two hydrogels showed different transition processes with temperature.

KW - Dynamic mechanical behavior

KW - Hydrogel

KW - Polyvinyl alcohol

KW - Twin-screw extrusion

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M3 - Article

AN - SCOPUS:33845540449

SN - 1000-7555

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JO - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

JF - Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering

IS - 5

ER -

Preparation of polyvinyl alcohol hydrogel by twin-serew extrusion and its characterization

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