Ameen Hadi Mohammed, Mansor B Ahmad, Nor Azowa Ibrahim, Norhazlin Zainuddin
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The corresponding hydrogels were obtained by swelling the xerogels in deionized water to equilibrium. Addition of EGDMA increases the transparency of xerogels and hydrogels. The minimum amount of EGDMA required to produce a transparent xerogel is 1%. All the Swelling parameters, including water content (EWC), volume fraction of polymer (ϕ<sub>2</sub>) and weight loss during swelling decrease with increasing EGDMA. Young's and shear modulus (E and G) increase as EGDMA increases. The hydrogels were characterized in terms of modulus cross-linking density (v <sub>e</sub> and v <sub>t</sub> ) and polymer-solvent interaction parameters (χ). Thermal properties include TGA and glass transition temperature (T<sub>g</sub>) enhance by adding EGDMA whereas the oxygen permeability (P) of hydrogels decreases as water content decrease.</p><p><strong>Conclusions: </strong>This study prepared and studied the properties for new copolymer (TMSPM-co-NVP) contains different amounts of (EGDMA). These copolymers possess new properties with potential use in different biomedical applications. The properties of the prepared hydrogels are fit with the standard properties of materials which should be used for contact lenses.</p>","PeriodicalId":9842,"journal":{"name":"Chemistry Central Journal","volume":"12 1","pages":"15"},"PeriodicalIF":0.0000,"publicationDate":"2018-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s13065-018-0379-4","citationCount":"24","resultStr":"{\"title\":\"Effect of crosslinking concentration on properties of 3-(trimethoxysilyl) propyl methacrylate/N-vinyl pyrrolidone gels.\",\"authors\":\"Ameen Hadi Mohammed, Mansor B Ahmad, Nor Azowa Ibrahim, Norhazlin Zainuddin\",\"doi\":\"10.1186/s13065-018-0379-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>The incorporation of two different monomers, having different properties, in the same polymer molecule leads to the formation of new materials with great scientific and commercial importance. 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Young's and shear modulus (E and G) increase as EGDMA increases. The hydrogels were characterized in terms of modulus cross-linking density (v <sub>e</sub> and v <sub>t</sub> ) and polymer-solvent interaction parameters (χ). Thermal properties include TGA and glass transition temperature (T<sub>g</sub>) enhance by adding EGDMA whereas the oxygen permeability (P) of hydrogels decreases as water content decrease.</p><p><strong>Conclusions: </strong>This study prepared and studied the properties for new copolymer (TMSPM-co-NVP) contains different amounts of (EGDMA). These copolymers possess new properties with potential use in different biomedical applications. 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引用次数: 24
摘要
背景:在同一聚合物分子中掺入两种不同性质的单体,可以形成具有重大科学和商业意义的新材料。在一些生物医学应用领域,对高分子材料的基本要求是亲水性、具有良好的机械性能和热性能、柔软性和透氧性。结果:以BPO为引发剂,以不同浓度的乙二醇二甲基丙烯酸酯(EGDMA)为交联剂,采用体聚法制备了一系列高转化率的3-(三甲氧基硅基)甲基丙烯酸丙酯/ n -乙烯基吡啶酮(TMSPM/NVP)干凝胶。用FTIR对共聚物进行了表征。将干凝胶在去离子水中溶胀至平衡,得到相应的水凝胶。EGDMA的加入增加了干凝胶和水凝胶的透明度。生产透明干凝胶所需的EGDMA的最小量为1%。随着EGDMA的增加,溶胀过程中的水分含量(EWC)、聚合物体积分数(2)和失重率均降低。杨氏模量和剪切模量(E和G)随EGDMA的增大而增大。用模量交联密度(v e和v t)和聚合物-溶剂相互作用参数(χ)对水凝胶进行表征。EGDMA的加入提高了水凝胶的热性能,包括TGA和玻璃化转变温度(Tg),而透氧性(P)随着水凝胶含水量的降低而降低。结论:本研究制备并研究了含不同量(EGDMA)的新型共聚物(TMSPM-co-NVP)的性能。这些共聚物具有新的性能,在不同的生物医学应用中具有潜在的用途。制备的水凝胶的性能符合隐形眼镜材料的标准性能。
Effect of crosslinking concentration on properties of 3-(trimethoxysilyl) propyl methacrylate/N-vinyl pyrrolidone gels.
Background: The incorporation of two different monomers, having different properties, in the same polymer molecule leads to the formation of new materials with great scientific and commercial importance. The basic requirements for polymeric materials in some areas of biomedical applications are that they are hydrophilic, having good mechanical and thermal properties, soft, and oxygen-permeable.
Results: A series of 3-(trimethoxysilyl) propyl methacrylate/N-vinyl pyrrolidone (TMSPM/NVP) xerogels containing different concentration of ethylene glycol dimethacrylate (EGDMA) as crosslinking agent were prepared by bulk polymerization to high conversion using BPO as initiator. The copolymers were characterized by FTIR. The corresponding hydrogels were obtained by swelling the xerogels in deionized water to equilibrium. Addition of EGDMA increases the transparency of xerogels and hydrogels. The minimum amount of EGDMA required to produce a transparent xerogel is 1%. All the Swelling parameters, including water content (EWC), volume fraction of polymer (ϕ2) and weight loss during swelling decrease with increasing EGDMA. Young's and shear modulus (E and G) increase as EGDMA increases. The hydrogels were characterized in terms of modulus cross-linking density (v e and v t ) and polymer-solvent interaction parameters (χ). Thermal properties include TGA and glass transition temperature (Tg) enhance by adding EGDMA whereas the oxygen permeability (P) of hydrogels decreases as water content decrease.
Conclusions: This study prepared and studied the properties for new copolymer (TMSPM-co-NVP) contains different amounts of (EGDMA). These copolymers possess new properties with potential use in different biomedical applications. The properties of the prepared hydrogels are fit with the standard properties of materials which should be used for contact lenses.
期刊介绍:
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