利用酿酒酵母R1再生废轮胎橡胶的研究  

Preliminary study of the reclaimation of ground tyre rubber by Saccharomyces cerevisiae R1

作　　者：陶子溢[1] 王雅琴[1] 赵素合[2] 李元虎[2] 

机构地区：[1]北京化工大学生命科学与技术学院,北京100029 [2]北京化工大学北京市新型高分子材料制备与加工重点实验室,北京100029

出　　处：《北京化工大学学报（自然科学版）》2011年第6期76-82,共7页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家"863"计划(2006AA06Z367);国家自然科学基金(50673009)

摘　　要：通过毒性实验分析了废轮胎橡胶(GTR)主要组分对酿酒酵母(S.cerevisiae)R1生长的影响,并用乙醇解毒,减少其对S.cerevisiae R1的抑制作用。经132 h再生后,30份再生GTR填充到丁苯橡胶(SBR)基体中的力学性能均好于未经S.cerevisiae R1再生的硫化橡胶,其溶胀值增加4.6%,交联密度下降,撕裂强度提高了26%。再生GTR与SBR界面接触良好,XPS测试显示C元素基本不变,S元素质量分数降低了23.86%,具有显著的脱硫效果。The yeast species S.cerevisiae R1 has the capability to recycle waste rubber.However the many toxic additives in rubber have a significant inhibiting effect on the growth of S.cerevisiae R1,as shown by our toxicity tests.Ethanol leaching of the rubber material can remove some of these toxic additives,reducing the adverse impact on the growth of the microorganism.After 132 hours of regeneration,a remarkable decrease in crosslink density,increase in swelling ratio（4.6%）,and better physical properties were observed for the resulting styrene butadiene rubber/devulcanized ground tyre rubber（SBR/DGTR） blend,compared with the corresponding values for untreated SBR/GTR.Scanning electron microscopy images of SBR/DGTR also showed an improvement in interfacial binding force and good adhesion.X-ray photoelectron spectroscopy showed that there was no obvious change in carbon content,but the content of sulfur decreased markedly（23.86%）,indicative of a significant desulfurization effect.

关 键 词：酿酒酵母 微生物脱硫 废橡胶 再生 解毒 

分 类 号：X783.3[环境科学与工程—环境工程]