Formation of Vinylidene in Polypropylene/Ethylene Vinyl Acetate (PP/EVA) Blends During Degradation

被引：5

作者：

Alothman, Othman ^{[2
]}

Salahudeen, Shafaat ^{[1
]}

Elleithy, Rabeh ^{[3
]}

Al-Zahrani, S. M. ^{[1
,2
]}

机构：

[1] King Saud Univ, SABIC Polymer Res Ctr, Riyadh 11421, Saudi Arabia

[2] King Saud Univ, Dept Chem Engn, Riyadh 11421, Saudi Arabia

[3] Printpack Inc, Williamsburg, VA USA

来源：

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2012年 / 51卷 / 05期

关键词：

Artificial exposure; Cross-linking; Degradation; Natural exposure; Polypropylene/ethyl vinyl acetate blend; Vinylidene; ACETATE)/CARBON BLACK MIXTURE; AGING CHARACTERISTICS; EVA; RADIATION; COPOLYMERS; FILMS; PHOTODEGRADATION; COMPOSITES; STABILITY; BEHAVIOR;

D O I：

10.1080/03602559.2012.654578

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 natural exposure and artificial weathering on selected properties of PP/EVA blends was investigated. The vinyl acetate concentration decreased with exposure time due to acetylation. The most pronounced effect of radiation is associated with oxidative degradation. The cross-linking of PP/EVA blends was attributed to the formation of vinylidene group. Weathering decreased the tensile strength, elongation at break, and Young's modulus of the naturally and artificially exposed blends. This reduction was the result of blends' molecular weight reduction due to the degradation induced by weathering.

引用

页码：540 / 547

页数：8

共 30 条

[11] Radiation effects on LDPE/EVA blends [J].

Dalai, S ;

Chen, WX .

JOURNAL OF APPLIED POLYMER SCIENCE, 2002, 86 (05) :1296-1302

[12] Radiation effects on poly(propylene) (PP)/ethylene-vinyl acetate copolymer (EVA) blends [J].

Dalai, S ;

Chen, WX .

JOURNAL OF APPLIED POLYMER SCIENCE, 2002, 86 (13) :3420-3424

[13]

Emanuel N.M., 1998, INT J POLYM MATER, V41, P7

[14] Weathering and thermal aging of ultraviolet-cured polymer films [J].

Hassiruzzaman, M ;

Khan, MA ;

Ali, KMI .

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING, 1999, 38 (01) :113-125

[15]

Huang JC, 2002, INT J POLYM MATER, V51, P1095

[16] Effects of natural weathering on properties of recycled newspaper-filled polypropylene (PP)/natural rubber (NR) composites [J].

Ismail, H. ;

Osman, H. ;

Mariatti, M. .

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING, 2008, 47 (07) :697-707

[17] Effects of Dynamic Vulcanization on Tensile Properties, Morphology and Natural Weathering of Polypropylene/Recycled Acrylonitrile Butadiene Rubber (PP/NBRr) Blends [J].

Ismail, H. ;

Galpaya, D. ;

Ahmad, Z. .

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING, 2010, 49 (01) :110-119

[18] UV aging behaviour of ethylene-vinyl acetate copolymers (EVA) with different vinyl acetate contents [J].

Jin, Jing ;

Chen, Shuangjun ;

Zhang, Jun .

POLYMER DEGRADATION AND STABILITY, 2010, 95 (05) :725-732

[19] CORRELATION OF PHYSICOCHEMICAL CHANGES IN UV-EXPOSED LOW-DENSITY POLYETHYLENE FILMS CONTAINING VARIOUS UV STABILIZERS [J].

LIU, MG ;

HORROCKS, AR ;

HALL, ME .

POLYMER DEGRADATION AND STABILITY, 1995, 49 (01) :151-161

[20] The Effects of Natural Weathering on the Properties of Linear Density Polyethylene (LDPE)/Thermoplastic Sago Starch (TPSS) Blends [J].

Majid, R. Abdul ;

Ismail, H. ;

Taib, R. Mat .

POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING, 2010, 49 (11) :1142-1149

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