Preparation of PP-grafting-vinyltrjmethoxysilane by γ-rays irradiation

WANG Feng; TONG Bin

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Preparation of PP-grafting-vinyltrjmethoxysilane by γ-rays irradiation

更新时间：2023-03-30

- Preparation of PP-grafting-vinyltrjmethoxysilane by γ-rays irradiation
- Journal of Radiation Research and Radiation Processing Vol. 27, Issue 5, Pages: 261-264(2009)
- 作者机构：
  
  1.安徽建筑工业学院　先进建筑材料安徽省重点实验室　合肥　230022
- 作者简介：
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WANG Feng, TONG Bin. Preparation of PP-grafting-vinyltrjmethoxysilane by γ-rays irradiation. [J]. Journal of Radiation Research and Radiation Processing 27(5):261-264(2009)
DOI：

WANG Feng, TONG Bin. Preparation of PP-grafting-vinyltrjmethoxysilane by γ-rays irradiation. [J]. Journal of Radiation Research and Radiation Processing 27(5):261-264(2009) DOI：

摘要

采用γ射线固相辐射接枝方法，在聚丙烯粉末表面接枝乙烯基三甲氧基硅烷制备PP-g-Si。研究了不同吸收剂量对聚丙烯接枝率的影响，发现加入第二单体苯乙烯可以提高其接枝率到4.2%。吸收剂量的提高可显著提高硅烷在聚丙烯上的接枝量，使得接枝聚丙烯水解后物理交联凝胶含量增加。由于γ射线辐射会引起聚丙烯分子链断裂，经固相辐射接枝聚丙烯的熔体流动速率会变大。利用DSC研究了产物PP-g-Si的熔点随辐射吸收剂量的变化，同时以XRD研究了PP-g-Si的结晶形态。

Abstract

γ-rays irradiation was used to graft monomers vinyltrjmethoxysilane onto polypropylene powders and then the obtained PP-g-Si was hydrolyzed to get cross-linking. In this paper, the effects of the absorbed dose on the grafting degree of the monomer vinyltrjmethoxysilan and gel content of the cross-linked samples were investigated. Adding the styrene as the second monomer can make grafting ratio up to 4.2%. The grafting ratio increases with the increment of absorbed dose, while gel content of the cross-linked samples induced by hydrolysis does not increase simultaneously. Because the irradiation can cause the molecular main-chain broken, melting flow rates (MFR) of PP-grafting-vinyltrjmethoxysilane decreases. The melting temperature of PP-g-Si has been investigated by DSC and crystal structure of PP-g-Si has also been studied by use of XRD.

关键词

γ射线辐射接枝聚丙烯乙烯基三甲氧基硅烷

Keywords

γ-ray irradiationGraftingPolypropyleneVinyltrimethoxysilane

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