Preparation and physical properties of the polyolefin nano-fibers by melt-electrospinning methods

熔融静电纺丝聚烯烃纳米纤维的制备及其物理性能

• 批准号: 21750215
• 负责人: KAWAMURA Takanobu
• 金额: $ 3万
• 依托单位: Kanazawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21750215/
• 关键词: 繊維材料; ポリオレフィン; 溶融エレクトロスピニング; エレクトロスピニング; 分子配向; 引張特性; ナノファイバー; 力学特性

We prepared isotactic polypropylene (iPP) nanofibers by melt-electrospinning methods. The effects of spinning conditions such as electric field strength and temperature for various iPP samples with different molecular weights and molecular weight distribution on the thermal behavior and on tensile behavior were investigated. We found followings.The fine fibers with the diameter in the submicron order were successfully prepared by melt-electrospinning methods.The average of the fiber diameter decreased with weakening the electric field strength and with decreasing the molecular weight.The DSC charts of the prepared nanofibers showed the existence of the mesophase structure.The iPP chains in the nanofibers were oriented to the spinning direction, which causes the high mechanical strength with the low strain at break.

我们通过熔融静电纺丝方法制备了等规聚丙烯（iPP）纳米纤维。研究了不同分子量和分子量分布的各种 iPP 样品的电场强度和温度等纺丝条件对热行为和拉伸行为的影响。我们发现：采用熔融静电纺丝方法成功制备了直径为亚微米级的细纤维，纤维平均直径随着电场强度的减弱和分子量的降低而减小。所制备纳米纤维的DSC图显示出中间相结构的存在。纳米纤维中的iPP链定向于纺丝方向，这导致了高机械强度和低断裂应变。

项目成果

溶融エレクトロスピニング法によるポレオレフィンナノファイバーの調製

熔融静电纺丝法制备聚烯烃纳米纤维

• 发表时间: 2010
• 作者: 布施充貴;河村幸伸;新田晃平
• 通讯作者: 新田晃平