Controlled reactive modification of polypropylene with maleic anhydride via solvent-free technique

被引：7

作者：

Kucera, Frantisek ^{[1
,2
]}

Petrus, Josef ^{[2
]}

Polacek, Petr ^{[2
]}

Jancar, Josef ^{[1
,2
]}

机构：

[1] Brno Univ Technol, Inst Mat Chem, Fac Chem, Purkynova 118, Brno 61200, Czech Republic

[2] Brno Univ Technol, Cent European Inst Technol, Purkynova 123, Brno 61200, Czech Republic

来源：

POLYMER DEGRADATION AND STABILITY | 2019年 / 168卷

关键词：

Polypropylene; Stabilization; Radical grafting; Reactive modification; Maleic anhydride; GLYCIDYL METHACRYLATE; ITACONIC ACID; EXTRUSION; DEGRADATION; FUNCTIONALIZATION; POLYETHYLENE; SOLUBILITY; ADDITIVES; LDPE;

D O I：

10.1016/j.polymdegradstab.2019.108934

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of radical scavengers on the control of beta-scission of polypropylene (PP) during the free-radical grafting with maleic anhydride (MAH) in melt was investigated. The main interest was the evaluation of the effective concentration of radical scavengers Irganox 1010 (IRN1010) and Irgafos 168 (IRF168) for better control of grafting process. For this purpose, radical grafting of non-stabilized PP was performed in order to describe specifically the effect of proposed additives with no effect of additives in commercial PP grades. For this purpose, the influence of the initial concentration of IRN1010 ([1RN1010](0)) on the reaction course was predicted with respect to the change of kinetic parameters, thermal and rheological properties of PP-g-MAH. Obtained results showed that the efficiency of IRN1010 and IRF168 is not proportional to their concentration above critical level as evidenced by rheological properties of PP-g-MAH. Above that point, both the grafting efficiency and grafting rate decrease and thus the determination of effective CIRN1010 is the key for approaching controlled radical grafting of PP. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：8