The Effect of Protein and Phospholipid on Natural Rubber Latex Molecular Structure

Long-mei WU; Bo-xiang WANG; Peng QU; Rong-jie ZHOU; Shuang-quan LIAO

doi:10.14028/j.cnki.1003-3726.2015.06.009

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The Effect of Protein and Phospholipid on Natural Rubber Latex Molecular Structure

更新时间：2022-09-18

- The Effect of Protein and Phospholipid on Natural Rubber Latex Molecular Structure
- Polymer Bulletin Vol. 28, Issue 6, Pages: 60-66(2015)
- 作者机构：
  
  1.海南大学农学院，海口　570228
  2.海南大学材料与化工学院，海口　570228
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2015.06.009
  CLC：
- Published：2015-06，
  
  Received：08 October 2014，
  
  Revised：17 December 2014，
扫描看全文
Long-mei WU, Bo-xiang WANG, Peng QU, Rong-jie ZHOU, Shuang-quan LIAO. The Effect of Protein and Phospholipid on Natural Rubber Latex Molecular Structure. [J]. Polymer Bulletin 28(6):60-66(2015)
DOI：

Long-mei WU, Bo-xiang WANG, Peng QU, Rong-jie ZHOU, Shuang-quan LIAO. The Effect of Protein and Phospholipid on Natural Rubber Latex Molecular Structure. [J]. Polymer Bulletin 28(6):60-66(2015) DOI： 10.14028/j.cnki.1003-3726.2015.06.009.

摘要

采用碱性蛋白酶和磷脂酶处理天然胶乳

制备脱蛋白胶乳和脱脂胶乳

结合原子吸收光谱仪、核磁共振交联密度仪、凝胶色谱(GPC)等仪器对处理前后的天然胶乳进行了分析。通过对比分析

发现酶处理后胶乳分子量降低

分子量分布变宽

金属离子浓度、凝胶含量和交联密度均降低。结果表明

金属离子与天然橡胶中的蛋白质、磷脂间存在着物理的或化学的作用力;蛋白质、磷脂在天然橡胶中起到节点的作用

有利于形成分子间交联

增大天然橡胶分子量

形成分子间到络结构。

Abstract

Natural rubber latex was firstly treated with alkaline protease or phospholipase. Then the effect of protein and phospholipid on natural rubber molecular structure was investigated by the combination of atomic absorption spectroscopy

nuclear magnetic resonance crosslinking density meter and gel permeation chromatography. The results indicated that the molecular weight

molecular weight distribution

the concentration of metal ions and crosslinking density

and the gel content of natural rubber presented a significant decrease after the treatment with alkaline protease or phospholipase

which are due to that there exist physical forces or chemical bond between the metal ions and protein

phospholipid in the natural rubber. The presence of protein and phospholipid contributes to the formation of intermolecular cross-linking

increasing molecular and intermolecular network structure.

关键词

天然胶乳蛋白质磷脂交联密度凝胶含量

Keywords

Natural rubber latexProteinPhospholipidCrosslinking densityGel content

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