私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當(dāng)前位置:> 首頁(yè) > 論文著作 > 正文
“Study on the Phase Transition Behavior of Poly(butylene adipate) in its Blends with Poly(vinyl phenol)”
作者:6. Xiaoli Sun, Fuwei Pi, Jianming Zhang, Isao Takahashi, Feng Wang, Shouke Yan, and Yukihiro Ozaki
關(guān)鍵字:Poly(butylene adipate), Poly(vinyl phenol), Phase Transition Behavior ,
論文來(lái)源:期刊
具體來(lái)源:J. Phys. Chem. B 2011, 115, 1950–1957.
發(fā)表時(shí)間:2011年

The phase transition behavior of poly(butylene adipate) (PBA) crystals in its blends with poly(vinyl phenol) (PVPh) was investigated by infrared (IR) spectroscopy and X-ray diffraction (XRD). The IR and XRD studies indicate that the hydrogen bonding between the C═O group of PBA and the OH group of PVPh developed in the PBA/PVPh blends with the ratios of 80/20 and 50/50 does not influence the solution crystallization behavior of PBA. The phase transition behavior of PBA in the blends is, however, significantly altered by the blending. In the neat PBA, linear changes of the intensities of IR bands at 1077, 930, and 910 cm−1 are observed in the temperature range of 25−47.5 °C followed by an abrupt change corresponding to the occurrence of β-to-α phase transition. In the blends, the accelerated intensity changes of the those IR bands occur before the β-to-α phase transition, which is contributed to the melting of imperfect β-PBA crystals at relatively lower temperature. In addition, the significantly depressed β-to-α phase transition temperature is also identified.

主站蜘蛛池模板: 前郭尔| 阿拉善左旗| 岚皋县| 山东省| 阿尔山市| 绵竹市| 彰化县| 福州市| 阳新县| 仁布县| 井冈山市| 宿松县| 嘉鱼县| 天门市| 乳山市| 昌乐县| 民县| 五河县| 海安县| 朝阳县| 林甸县| 尚义县| 西贡区| 龙陵县| 静宁县| 自贡市| 紫金县| 罗源县| 博湖县| 西盟| 永昌县| 金川县| 广东省| 南通市| 西盟| 中方县| 宜兴市| 石渠县| 新乡县| 元氏县| 扶绥县|