Rheological and thermal properties of acrylonitrile-acrylamide copolymers: influence of polymerization temperature
文献类型：期刊论文
| 作者 | Wu, XP; Lu, CX; Wu, GP; Zhang, R; Ling, LC |
| 刊名 | Fibers and polymers
 |
| 出版日期 | 2005-06-01 |
| 卷号 | 6期号:2页码:103-107 |
| 关键词 | Acrylonitrile-acrylamide copolymers Polymerization temperature Carbon fiber Rheological and thermal properties |
| ISSN号 | 1229-9197 |
| 通讯作者 | Wu, xp(wuxuepingzxl@yahoo.com.cn) |
| 英文摘要 | An attempt was made to correlate the polymerization temperature and rheological and thermal properties of acrylonitrile (an)-acrylamide (am) copolymers. the copolymers were synthesized at different polymerization temperature. the copolymer structure was characterized by gel permeation chromatography (gpc) and infrared spectrum (ir). the rheological and thermal properties were investigated by a viscometer and differential scanning calorimeter-thermogrametric (dsc-tg) analysis, respectively. when the polymerization temperature increased from 41 degrees c to 65 t, the molecular weight (m,) of copolymers decreased from 1,090,000 to 250,000, while its conversion increased from 18% to 63%, and the polymer composition changed slightly. to meet the requirements of carbon fibers, the rheological and thermal properties of products were also investigated. it was found that the relationship between viscosity and (m) over bar (w) was nonlinear and the viscosity index (n) decreased from 3.13 to 2.69, when the solution temperature increased from 30 degrees c to 65 degrees c. this suggests the dependence of viscosity upon (m) over bar (w) is higher at lower solution temperature. according to the result of activation energy, the sensivity of viscosity to solution temperature is higher for an-am copolymers synthesized at higher polymerization temperature. the result of thermal analysis shows that the copolymers obtained at higher polymerization temperature are easier to cyclization evidenced from lower initiation temperature. |
| WOS关键词 | CARBON-FIBERS ; POLYACRYLONITRILE ; STABILIZATION ; DEGRADATION ; POLYMERS ; BEHAVIOR |
| WOS研究方向 | Materials Science ; Polymer Science |
| WOS类目 | Materials Science, Textiles ; Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000230364900002 |
| 出版者 | KOREAN FIBER SOCIETY |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2377786 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wu, XP |
| 作者单位 | 1.Chinese Acad Sci, Inst Coal Chem, Key Lab Carbon Mat, Taiyuan 030001, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.E China Univ Sci & Technol, Coll Chem Engn, Shanghai 200237, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, XP,Lu, CX,Wu, GP,et al. Rheological and thermal properties of acrylonitrile-acrylamide copolymers: influence of polymerization temperature[J]. Fibers and polymers,2005,6(2):103-107. |
| APA | Wu, XP,Lu, CX,Wu, GP,Zhang, R,&Ling, LC.(2005).Rheological and thermal properties of acrylonitrile-acrylamide copolymers: influence of polymerization temperature.Fibers and polymers,6(2),103-107. |
| MLA | Wu, XP,et al."Rheological and thermal properties of acrylonitrile-acrylamide copolymers: influence of polymerization temperature".Fibers and polymers 6.2(2005):103-107. |
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来源：中国科学院大学
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