沥滤法制备低蛋白天然橡胶的硫化动力学研究  

Study on the vulcanization kinetics of the low protein natural rubber prepared by leaching

作　　者：李建鹏 高天明 吕臻[2] 惠永海 吕明哲[2] 罗勇悦 LI Jian-peng;GAO Tian-ming;LV Zhen;HUI Yong-hai;LV Ming-zhe;LUO Yong-yue(School of Chemistry and Chemical Engineering,Key laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes,Lingnan Normal University,Zhanjiang,524048,China;Agriculture Products Processing Research Institute,Chinese Academy of Tropical Agriculture Science,Zhanjiang 524001 China)

机构地区：[1]岭南师范学院化学化工学院,清洁能源材料化学广东普通高校重点实验室,广东湛江524048 [2]中国热带农业科学院农产品加工研究所,广东湛江524001

出　　处：《化学研究与应用》2020年第8期1500-1504,共5页Chemical Research and Application

基　　金：岭南师范学院人才专项(ZL2002);岭南师范学院校级项目(LY1818);中国热带农业科学院基本科研业务费专项资金(No:1630122020011,1630122019009)。

摘　　要：鉴于离心法制备低蛋白天然橡胶需要繁重设备和繁琐的工艺,本研究拟采用碱性蛋白酶处理天然胶乳,然后多次沥滤配合绉片的方法制备低蛋白天然橡胶。对比沥滤法低蛋白天然橡胶与离心法低蛋白天然橡胶的交联密度、力学性能和硫化特性参数。结果表明,沥滤法低蛋白天然橡胶的交联密度高,拉伸强度大,硫化速率快,硫化反应活化能低。The low-protein natural rubber(LPNR)that prepared by centrifugation needs many equipment and complicated procedure.In this work the natural latex was treated by Alkali-proteolytic enzyme,and then the LPNR was prepared by leaching the sheet rubber.The properties of LPNR prepared by leaching were compared with natural rubber(NR)and LPNR prepared by centrifugation,such as crosslink density,mechanical properties and parameter of vulcanization kinetics.The low protein natural rubber prepared by leaching showed higher crosslink density,tensile strength,quicker vulcanization rate and lower activation energy.

关 键 词：沥滤法 低蛋白天然橡胶 制备 硫化动力学 

分 类 号：O632.14[理学—高分子化学]