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硫酸锌对天然胶乳早期保存的研究

发表时间:2016-06-30  浏览量:1948  下载量:1334
全部作者: 候雪,赵富春,白晓莹,张胜君,廖双泉
作者单位: 海南大学材料与化工学院
摘 要: 天然胶乳良好的早期保存对高品质橡胶起着至关重要的作用,常用的天然胶乳保存剂为氨水,但其在使用过程中存在污染空气、腐蚀建筑物、危害工人健康等弊端。这里通过测试胶乳的挥发性脂肪酸、pH值、Zeta电位、粒径以及菌落数量来研究硫酸锌对天然胶乳的保存效果。实验结果表明:硫酸锌含量为0.1%的胶乳保存16 h内,挥发脂肪酸值为0.093,pH值较稳定,Zeta电位绝对值为34.1,说明硫酸锌对天然胶乳具有较好的保存效果。采用硫酸锌保存胶乳的菌落数明显低于对照组氨水保存胶乳的菌落数,说明硫酸锌对天然胶乳具有较好抑菌效果,生胶质量指标达到5号标准胶的要求,并且生胶的分子结构没有发生变化。
关 键 词: 有机高分子材料;天然胶乳;无氨保存;硫酸锌;稳定性
Title: Study on the natural latex preservation with zinc sulfate
Author: HOU Xue, ZHAO Fuchun, BAI Xiaoying, ZHANG Shengjun, LIAO Shuangquan
Organization: College of Materials and Chemical Engineering, Hainan University
Abstract: Effective preservation of natural latex early plays a vital role for high quality rubber. Ammonia is often used for the preservation of the natural latex, but it may pollute air, corrode buildings, harm workers’ health and so on. In this paper, the effect of zinc sulfate on the preservation of natural rubber latex is studied by the mesurement of the volatile fatty acid, pH value of latex, Zeta potential, particle size and the number of colonies. The results show that zinc sulfate has a good preservation effect for nature rubber. The volatile fatty acids value is 0.093, pH value has not changed, Zeta potential is -34.1 of the natural latex with zinc sulfate as a preservative in the 16 h preservative period. In addition, aerobic bacterial count of fresh nature rubber with zinc sulfate as a preservative is less than that with ammonia as a preservative, showing that zinc sulfate has good antibacterial effect for nature rubber. The physical properties of the nature rubber are up to No. 5 standard rubber and the structure of the nature rubber has not changed.
Key words: organic macromolecule materials; natural rubber latex; preservation without ammonia; zinc sulfate; stability
发表期数: 2016年6月第12期
引用格式: 候雪,赵富春,白晓莹,等. 硫酸锌对天然胶乳早期保存的研究[J]. 中国科技论文在线精品论文,2016,9(12):1189-1196.
 
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