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

相關(guān)鏈接
聯(lián)系方式
  • 通信地址:揚(yáng)州大學(xué)化學(xué)化工學(xué)院810信箱
  • 郵編:225002
  • 電話:0514-87975230
  • 傳真:0514-87975244
  • Email:dfwu@yzu.edu.cn
當(dāng)前位置:> 首頁 > 論文著作 > 正文
The Selective Localization of Nanofiller and Its Effect on the Morphology and Crystallization of Polylactide/Poly( -caprolactone) Blend.
作者:Defeng Wu, Dongpo Lin, Jie Zhang, Yisheng Zhang, Dongmei Wang, Ming Zhang.
關(guān)鍵字:polylactide; poly( -caprolactone); blend; clay; carbon nanotubes; crystallization.
論文來源:期刊
具體來源:Macromolecular Chemistry & Physics, 202(6), 613-626
發(fā)表時間:2011年

Macromolecular Chemistry & Physics, 202(6), 613-626

 ABSTRACT:

 Polylactide/poly( -caprolactone) blend (PLA/PCL) is an interesting biomaterial because of good property complementarity between PLA and PCL. The incompatibility between these two polymers, however, highly restricts their property combinations. Adding the nanofiller to change the surface and interface properties of the PLA/PCL blend is found as a new way to improve its phase morphology. In this case, the selective localization of nanofiller is very important to the morphological design and control. In this work, therefore, two types of nanofiller, carbon nanotubes (CNTs) and organoclay were used as the third component to be compounded with the PLA/PCL blend by melt mixing for the selective localization study. It is interesting that these two types of nanofiller present different selective localization behaviors in the ternary systems: clay is selectively localized in the PLA phase and phase interface, which agrees well with thermodynamical prediction; while CNTs mainly dispersed in the PCL phase and phase interface, contrary to thermodynamical estimation. But with reduced viscosity ratio of the blend matrices, the CNTs change their localization from PCL to PLA phase. The effects of the different selective localization behaviors of clay and CNTs on the morphologies were then further studied. Compared with those of the blank blend, the phase morphologies of the ternary systems are improved remarkably although these improvements follow different mechanisms with different selective localizations. Besides, the crystallization behaviors of ternary systems also show high dependence on the selective localizations of nanofiller: for the melt crystallization of PCL component, only in the case of PCL phase localization can the nanofiller have strong nucleating effect; while for the cold crystallization of PLA component, not only the PLA phase localized clay tactoids, the phase interface localized CNTs can also promote crystallization of the PLA.

PDF DOWNLOAD:

 http://onlinelibrary.wiley.com/doi/10.1002/macp.201000579/abstract

主站蜘蛛池模板: 伊金霍洛旗| 合山市| 太谷县| 平原县| 青铜峡市| 寿宁县| 南丹县| 六枝特区| 新晃| 千阳县| 定襄县| 原阳县| 长岛县| 长治市| 宣汉县| 梁山县| 静安区| 瑞丽市| 应用必备| 西安市| 八宿县| 武胜县| 法库县| 榆中县| 余江县| 凤翔县| 铁岭市| 十堰市| 景东| 昌图县| 桐柏县| 镶黄旗| 合水县| 深圳市| 新竹县| 大洼县| 威海市| 武汉市| 宣汉县| 三台县| 皮山县|