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HEMA/St共聚水凝胶的溶胀、拉伸性能和网络参数的研究 被引量:1

Studies on Swelling,Tensile Properties and Network Parameters of HEMA/St Copolymeric Hydrogels
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摘要 以刚性疏水单体苯乙烯(St)与亲水性单体甲基丙烯酸-β-羟乙酯(HEMA)共聚,分别以双甲基丙烯酸乙二醇酯(EDMA)和二乙烯基苯(DVB)为交联剂,采用本体聚合的方法合成了5个系列的水凝胶材料.研究了St含量以及交联剂的类型和用量对水凝胶溶胀、拉伸性能以及网络结构参数的影响.结果表明:St含量或交联剂用量增大,均导致水凝胶中平衡水质量分数降低,聚合物体积分数增大,有效交联密度增大,网链摩尔质量减小,聚合物-水相互作用参数增大;反映在宏观上是拉伸强度和杨氏模量的增大.在HEMA70/St30水凝胶体系中EDMA和DVB有着相近的交联效率. <Abstrcat> 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 (w_1) and M_C values the increase of volume fraction of polymer in hydrogel (φ_2), 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.
出处 《北京理工大学学报》 EI CAS CSCD 北大核心 2005年第6期551-555,559,共6页 Transactions of Beijing Institute of Technology
关键词 水凝胶 溶胀性能 拉伸性能 有效交联密度 相互作用参数 交联效率 hydrogels swelling behavior tensile properties effective crosslinking density interaction parameter crosslinking efficiency
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  • 1Young C D, Wu J R, Tsou T L. Fabrication and characteristics of polyHEMA artificial skin improved tensile properties [J]. Journal of Membranes Science,1998, 146(1): 83-93. 被引量:1
  • 2Barnes A, Corkhill P H, Tighe B J. Synthetic hydrogels: 3. Hydroxyalky acrylate and methacrylate copolymers: Surface and mechanical properties [J].Polymer, 1988, 29(12): 2191-2202. 被引量:1
  • 3Jarvie A W P, Lloyd M C, Pourcain C B St. Novel hydrophilic cyclic monomers in hydrogel synthesis[J].Biomaterials, 1998, 19(21): 1957-1961. 被引量:1
  • 4Lou X, Vijayasekaran S, Chirila T V, et al.Synthesis, physical characterization, and biological performance of sequential homointerpenetrating polymer network sponges based on poly (2-hydroxyethyl methacrylate) [J]. Journal of Biomedical Material Research, 1999, 47(3): 404-411. 被引量:1
  • 5Young C D, Wu J R, Tsou T L. High-strength,ultra-thin and fiber-reinforced pHEMA artificial skin[J]. Biomaterials, 1998, 19(19): 1745-1752. 被引量:1
  • 6Schoonbrood H A S, Aerdts A M, German A L.Determination of the intra- and intermolecular microstructure of bulk and emulsion copolymers of styrene and 2-hydroexyethyl methacrylate by means of proton NMR and gradient polymer clution chromatography[J]. Macromolecules, 1995, 28(16):5518-5525. 被引量:1
  • 7Huglin M B, Rehab M M A M. Mechanical and thermodynamic properties of butyl acrylate-N-vinylpyrrolidone hydrogels [J]. Polymer,1987, 28(13): 2200-2206. 被引量:1
  • 8Peppas N A, Merrill E W. Crosslinked poly (vinyl alcohol) hydrogels as swollen elastic network [J].Journal of Applied Polymer Science, 1977, 21(7):1763-1770. 被引量:1
  • 9Davis T P, Huglin M B. Effect of composition on properties of copolymeric N-vinyl-2-pyrrolidone/methyl methacrylate hydrogels and organogels [J].Polymer, 1990, 31(3): 513-519. 被引量:1
  • 10Davis T P, Huglin M B, Yip D C F. Properties of poly (N-vinyl-2-pyrrolidone) hydrogels crosslinked with ethylenglycol dimethaerylate [J]. Polymer,1988, 29(4): 701-706. 被引量:1

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