Effect of Process Parameters on Grafting Ratio and Thermal Stability of Lactide-Grafted Sisal Fiber

ABSTRACT

Polylactide (PLA) was grafted onto sisal fiber (SF) on the basis of the principle of lactide coordinative ring-opening polymerization. The orthogonal test was done to investigate which process parameter affected the grafting ratio mostly. Then the thermal stability of lactide-grafted sisal fiber (SF-g-LA) was studied. Results demonstrated that the lactide was grafted on sisal fiber surface and initiator amount was found to be the most important determinant of the grafting ratio. After grafting copolymerization reaction, the thermal stability of sisal fiber decreased. The increase of grafting ratio does not decreased the thermal stability of SF-g-LA.

摘要

在本研究中，在丙交酯配位开环聚合原则的基础上将聚乳酸（PLA）接枝到剑麻纤维（SF​​）。通过正交试验来研究哪个处理参数对接枝率的影响最大。然后，对交酯接枝的剑麻纤维（SF-g-LA）的热稳定性进行了研究。结果表明，对于接枝到剑麻纤维表面的丙交酯，引发剂用量是接枝率的最重要决定因素。接枝共聚反应后，剑麻纤维的热稳定性下降。接枝率的增加并不会降低SF-g-LA的热稳定性。

KEYWORDS:

• Grafting ratio
• lactide
• orthogonal test
• sisal fiber
• thermal stability

关键词:

• 接枝率
• 丙交酯
• 正交试验
• 剑麻纤维
• 热稳定性

Funding

This research was supported by Specialized Research Fund for the Doctoral Program of Higher Education of China (grant no. 20120172130004) and National Key Basic Research Program of China (973 Program) (grant no. 2012CB025902).

Additional information

Funding

This research was supported by Specialized Research Fund for the Doctoral Program of Higher Education of China (grant no. 20120172130004) and National Key Basic Research Program of China (973 Program) (grant no. 2012CB025902).