Influence of entanglements an the glass transition and structural relaxation behaviors of macromolecules. 1. Polycarbonate
文献类型：期刊论文
| 作者 | Huang DH ; Yang YM ; Zhuang GQ ; Li BY |
| 刊名 | macromolecules
 |
| 出版日期 | 1999 |
| 卷号 | 32期号:20页码:6675-6678 |
| 关键词 | POLYSTYRENE MONOMOLECULAR PARTICLES DRIED ATACTIC POLYSTYRENE DILUTE-SOLUTIONS CONCENTRATION-DEPENDENCE ISOTACTIC POLYSTYRENE ENTHALPY RELAXATION WATER-SURFACE CRYSTALLIZATION ELECTROSPRAY POLYMERS |
| ISSN号 | 0024-9297 |
| 通讯作者 | huang dh |
| 中文摘要 | we obtained the single-chain polycarbonate sample, by a new fast evaporation method and found that the polycarbonate sample obtained by this method is completely amorphous, while the polycarbonate sample obtained by other methods all have a certain degree of crystallinity. the glass transition temperature (t-g) of the sample decreases with the decreasing of concentration when the concentration of the prepared solution is below the critical value. the critical concentration we obtained from the t-g dependence of concentration is 0.9% g/ml and is in accord with that obtained by viscometry and light scattering methods directly from the solution. the structural relaxation behavior is found also different from that of a normal bulk sample of polycarbonate. the enthalpic peak of the single-chain sample is lower: than that of the bulk one, which corresponds to the lower glass transition temperature. the peak of the single-chain sample is lower and broader, and the relaxed enthalpy is much lower compared with that of the bulk sample. these results have been explained in terms of the effect of entanglement on the mobility of the segments in polymer and the compact conformation in the single-chain sample. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000083003300039 |
| 公开日期 | 2010-11-04 |
| 源URL | [http://202.98.16.49/handle/322003/21591]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Huang DH,Yang YM,Zhuang GQ,et al. Influence of entanglements an the glass transition and structural relaxation behaviors of macromolecules. 1. Polycarbonate[J]. macromolecules,1999,32(20):6675-6678. |
| APA | Huang DH,Yang YM,Zhuang GQ,&Li BY.(1999).Influence of entanglements an the glass transition and structural relaxation behaviors of macromolecules. 1. Polycarbonate.macromolecules,32(20),6675-6678. |
| MLA | Huang DH,et al."Influence of entanglements an the glass transition and structural relaxation behaviors of macromolecules. 1. Polycarbonate".macromolecules 32.20(1999):6675-6678. |
入库方式： OAI收割
来源：长春应用化学研究所
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