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

相關鏈接
聯系方式
  • 通信地址:廣州市天河區五山華南農業大學材料與能源學院
  • 郵編:510642
  • 電話:13560283795
  • 傳真:
  • Email:xuca2020@163.com
當前位置:> 首頁 > 論文著作 > 正文
Effects of polysiloxanes with different molecular weights on in vitro cytotoxicity and properties of polyurethane/cotton–cellulose nanofiber nanocomposite films
作者:Chang-An Xu, Bingfei Nan,Mangeng Lu,Zhencai Qu, Zhiyou Tan, Kun Wu,Jun Shi
關鍵字:polysiloxane,polyurethane,nanofiber
論文來源:期刊
具體來源:Polymer Chemistry
發表時間:2020年

A series of polyurethane/cotton–cellulose nanofiber nanocomposite films are manufactured using amino-terminated polydimethylsiloxane (H2N-PDMS-NH2), polycarbonate diol (PCDL), isophorone diisocyanate (IPDI), and dispersed cotton–cellulose nanofibers (c-CNF). The heat resistance, hydrophobicity, mechanical properties, surface morphology and effect on cells of the film are studied. The results show that as the molecular weight of H2N-PDMS-NH2 increases, the heat resistance and hydrophobicity of the material improve, and when the molecular weight is 4000, its surface free energy reaches 14.9 mJ m?2. This is mainly because an increase in the molecular weight of H2N-PDMS-NH2 changes the chemical structure of the polymer and increases the possibility of low surface energy Si enrichment on the surface. In addition, the cell viability reaches 78.31% in the MTT experiment, which may be related to the biocompatibility of H2N-PDMS-NH2. The relative hemolysis rate of the polymer material to red blood cells is less than 2%, and also shows lower adhesion to platelet cells, which may be related to the hydrophobicity of the surface.


主站蜘蛛池模板: 辉县市| 临高县| 永善县| 江油市| 多伦县| 兴义市| 丹凤县| 吉木萨尔县| 保亭| 区。| 汉阴县| 五家渠市| 巧家县| 密云县| 涞源县| 新晃| 沙田区| 北碚区| 湖北省| 枣阳市| 瑞安市| 上杭县| 临江市| 平泉县| 林芝县| 揭东县| 顺昌县| 宝清县| 手游| 蒙自县| 安乡县| 肥东县| 鄂托克旗| 湟源县| 屯昌县| 陈巴尔虎旗| 宽甸| 巧家县| 浦江县| 大连市| 波密县|