摘要
以浓缩天然胶乳为原料,利用尿素联合酶解工艺制备低蛋白天然胶乳。探讨了制备工艺中影响氮质量分数的几个主要因素,并对硫化胶膜的物理机械性能进行了研究。结果表明:以质量分数1%的SDS作为维持浓缩胶乳稳定性的保存剂,以质量分数0.06%尿素+质量分数1%碱性蛋白酶作为脱蛋白剂,处理时间为60~90min时,制备的低蛋白天然胶乳氮质量分数为0.13%~0.19%,但此工艺制备的低蛋白天然胶乳的力学性能略有下降。
Using concentrated natural latex as raw material, low protein natural latex was prepared by urea combined with enzymolysis process. Several main factors affecting nitrogen mass fraction in the preparation process were discussed, and the mechanical properties of vulcanizate were studied. The results showed that when 1% SDS was used as preservative to maintain the stability of concentrated latex, 0.06% urea and 1% alkaline protease were used as deproteinizing agent, and the processing time was 60~90 min, the nitrogen mass fraction of low protein natural latex was 0.13%~0.19%. However, the mechanical properties of low-protein natural latex prepared by this process decreased slightly.
作者
潘俊任
刘运浩
宁家胜
蒋一帆
黎燕飞
吕明哲
PAN Jun-ren;LIU Yun-hao;NING Jia-sheng;JIANG Yi-fan;LI Yan-fei;LYU Ming-zhe(Guangdong Guangken Rubber Group Technology Innovation Center,Maoming Guangdong 525200,China;Guangdong Provincial Key Laboratory of Natural Rubber Processing,Agricultural Products Processing Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang Guangdong 524001,China;South Subtropical Crop Research Institute,Chinese Academy of Tropical Agricultural Sciences,Zhanjiang Guangdong 524091,China)
出处
《当代化工》
CAS
2022年第11期2628-2631,共4页
Contemporary Chemical Industry
基金
广东省科技专项资金(“大专项+任务清单”)项目(项目编号:mmkj2020043)
2019年海南省基础与应用基础研究计划(自然科学领域)高层次人才项目资助(项目编号:2019RC288)。
关键词
天然胶乳
尿素
酶解
力学性能
Natural latex
Urea
Enzymatic hydrolysis
Mechanical property
