The Degradation and Prestabilization of Acrylonitrile Copolymers

被引：18

作者：

Cui, Chuansheng ^{[1
]}

Yu, Lina ^{[2
]}

Wang, Chengguo ^{[3
]}

机构：

[1] Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Peoples R China

[2] Lib Liaocheng Univ, Circulat Dept, Liaocheng 252059, Peoples R China

[3] Shandong Univ, Carbon Fiber Ctr, Coll Mat Sci & Engn, Jinan 250061, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2010年 / 117卷 / 03期

关键词：

degradation; prestabilization; acrylonitrile; STABILIZATION; FIBERS; BEHAVIOR;

D O I：

10.1002/app.32032

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 degradation and prestabilization of polyacrylonitrile (PAN) were investigated with differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR). The initial temperature, initial loss-weight temperatures, and loss-weight were significantly lowered when ammonium itaconate (AIA) was used as comonomer. One exothermal peak of PAN (homopolymer) was shown in the DSC curves, while there were four exothermal peaks of poly(AN-AIA). FTIR spectra results confirm the degradation process of NH4+ groups. During the heating process, NH4+ groups (3030 cm(-1)) were changed into NH3+ (2955 cm(-1)) and then NH2+ groups (2920 cm(-1)). The dissociated H+ could initiate the cyclization reactions of C equivalent to N companied with heat released. The effect of ammonia on degradation and prestabilization of PAN was also studied. It was found that ammonia could accelerate prestabilization of acrylic precursors. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 117: 1596-1600, 2010

引用

页码：1596 / 1600

页数：5

共 16 条

[1] RAPID STABILIZATION OF ACRYLIC FIBERS USING AMMONIA - EFFECT ON STRUCTURE AND MORPHOLOGY [J].

BHAT, GS ;

PEEBLES, LH ;

ABHIRAMAN, AS ;

COOK, FL .

JOURNAL OF APPLIED POLYMER SCIENCE, 1993, 49 (12) :2207-2219

[2]

CENGIZ S, 2000, POLYM INT, V49, P479

[3]

CHEN H, 2005, J APPL POLYM SCI, V98, P1708

[4] Acrylonitrile/ammonium itaconate aqueous deposited copolymerization [J].

Cui, Chuansheng ;

Wang, Chengguo ;

Zhao, Yaqi .

JOURNAL OF APPLIED POLYMER SCIENCE, 2006, 102 (01) :904-908

[5]

GUPTA AK, 1991, REV MACROMOL CHEM PH, V89, P1

[6]

MASSANORI S, 1994, POLYM DEGRAD STABIL, V47, P217

[7] RELATION BETWEEN MOLECULAR-WEIGHT AND INTRINSIC-VISCOSITY OF POLYACRYLONITRILE [J].

MISRA, GS ;

MUKHERJEE, PK .

COLLOID AND POLYMER SCIENCE, 1978, 256 (10) :1027-1029

[8] UV stabilization route for melt-processible PAN-based carbon fibers [J].

Paiva, MC ;

Kotasthane, P ;

Edie, DD ;

Ogale, AA .

CARBON, 2003, 41 (07) :1399-1409

[9] Influence of γ Irradiation on the Properties of Polyacrylonitrile Films [J].

Pawde, S. M. ;

Deshmukh, Kalim .

JOURNAL OF APPLIED POLYMER SCIENCE, 2008, 110 (05) :2569-2578

[10]

RENJITH D, 2003, J APPL POLYM SCI, V88, P915

← 1 2 →