Studies on swelling, tensile properties and network parameters of HEMA/St copolymeric hydrogels

Jian Quan Wang; Wen Hui Wu; Yan Liu; Rong Jie Yang

Studies on swelling, tensile properties and network parameters of HEMA/St copolymeric hydrogels

Jian Quan Wang^*, Wen Hui Wu, Yan Liu, Rong Jie Yang

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Five series of hydrogels based on the rigid hydrophobic monomer styrene (St) and the hydrophilic monomer 2-hydroxyethyl methacrylate (HEMA) crosslinked with ethylene dimethacrylate (EDMA) or divinyl benzene (DVB) were synthesized by bulk polymerization. Effects of St content and the type and content of crosslinker on swelling behaviors, tensile properties, effective crosslink density (v_e), molar mass between cross-links (M_C) and polymer-water interaction parameter (χ) of hydrogels were studied. It has been shown that the increase of styrene or crosslinker content in polymerization would lead to changes of swelling behavior, network structure and polymer-water interaction in hydrogels, viz. the decrease of equilibrium water content (w₁) and M_C values, and the increase of volume fraction of polymer in hydrogel (ψ₂), v_e and χ values. These changes represent macroscopically the increase of tensile strength and Young's modulus of the hydrogels. EDMA and DVB have similar crosslinking efficiency in the HEMA70/St30 system.

Original language	English
Pages (from-to)	551-555+559
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	25
Issue number	6
Publication status	Published - Jun 2005

Keywords

Crosslinking efficiency
Effective crosslinking density
Hydrogels
Interaction parameter
Swelling behavior
Tensile properties

Cite this

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title = "Studies on swelling, tensile properties and network parameters of HEMA/St copolymeric hydrogels",

abstract = "Five series of hydrogels based on the rigid hydrophobic monomer styrene (St) and the hydrophilic monomer 2-hydroxyethyl methacrylate (HEMA) crosslinked with ethylene dimethacrylate (EDMA) or divinyl benzene (DVB) were synthesized by bulk polymerization. Effects of St content and the type and content of crosslinker on swelling behaviors, tensile properties, effective crosslink density (ve), molar mass between cross-links (MC) and polymer-water interaction parameter (χ) of hydrogels were studied. It has been shown that the increase of styrene or crosslinker content in polymerization would lead to changes of swelling behavior, network structure and polymer-water interaction in hydrogels, viz. the decrease of equilibrium water content (w1) and MC values, and the increase of volume fraction of polymer in hydrogel (ψ2), ve and χ values. These changes represent macroscopically the increase of tensile strength and Young's modulus of the hydrogels. EDMA and DVB have similar crosslinking efficiency in the HEMA70/St30 system.",

keywords = "Crosslinking efficiency, Effective crosslinking density, Hydrogels, Interaction parameter, Swelling behavior, Tensile properties",

author = "Wang, {Jian Quan} and Wu, {Wen Hui} and Yan Liu and Yang, {Rong Jie}",

year = "2005",

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journal = "Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology",

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T1 - Studies on swelling, tensile properties and network parameters of HEMA/St copolymeric hydrogels

AU - Wang, Jian Quan

AU - Wu, Wen Hui

AU - Liu, Yan

AU - Yang, Rong Jie

PY - 2005/6

Y1 - 2005/6

N2 - Five series of hydrogels based on the rigid hydrophobic monomer styrene (St) and the hydrophilic monomer 2-hydroxyethyl methacrylate (HEMA) crosslinked with ethylene dimethacrylate (EDMA) or divinyl benzene (DVB) were synthesized by bulk polymerization. Effects of St content and the type and content of crosslinker on swelling behaviors, tensile properties, effective crosslink density (ve), molar mass between cross-links (MC) and polymer-water interaction parameter (χ) of hydrogels were studied. It has been shown that the increase of styrene or crosslinker content in polymerization would lead to changes of swelling behavior, network structure and polymer-water interaction in hydrogels, viz. the decrease of equilibrium water content (w1) and MC values, and the increase of volume fraction of polymer in hydrogel (ψ2), ve and χ values. These changes represent macroscopically the increase of tensile strength and Young's modulus of the hydrogels. EDMA and DVB have similar crosslinking efficiency in the HEMA70/St30 system.

AB - Five series of hydrogels based on the rigid hydrophobic monomer styrene (St) and the hydrophilic monomer 2-hydroxyethyl methacrylate (HEMA) crosslinked with ethylene dimethacrylate (EDMA) or divinyl benzene (DVB) were synthesized by bulk polymerization. Effects of St content and the type and content of crosslinker on swelling behaviors, tensile properties, effective crosslink density (ve), molar mass between cross-links (MC) and polymer-water interaction parameter (χ) of hydrogels were studied. It has been shown that the increase of styrene or crosslinker content in polymerization would lead to changes of swelling behavior, network structure and polymer-water interaction in hydrogels, viz. the decrease of equilibrium water content (w1) and MC values, and the increase of volume fraction of polymer in hydrogel (ψ2), ve and χ values. These changes represent macroscopically the increase of tensile strength and Young's modulus of the hydrogels. EDMA and DVB have similar crosslinking efficiency in the HEMA70/St30 system.

KW - Crosslinking efficiency

KW - Effective crosslinking density

KW - Hydrogels

KW - Interaction parameter

KW - Swelling behavior

KW - Tensile properties

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M3 - Article

AN - SCOPUS:23044488807

SN - 1001-0645

VL - 25

SP - 551-555+559

JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

IS - 6

ER -

Studies on swelling, tensile properties and network parameters of HEMA/St copolymeric hydrogels

Abstract

Keywords

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