欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
利用光学流变显微镜(ORM)在线研究剪切场下左旋聚乳酸(PLLA)非等温结晶过程,采用差示扫描量热法(DSC)和广角X射线衍射(WAXD)研究了剪切后样品的热行为和结晶性能。实验结果表明,施加剪切作用不改变PLLA的晶型,但大大加快了结晶过程,提高了起始温度。PLLA在剪切场下的结晶形态主要受剪切速率的影响,当剪切速率高于临界剪切速率(10s-1)时,PLLA由球晶向串晶转变。随着剪切速率增大,串晶的数量变多变窄,结晶更完善,结晶度增大。与剪切速率相比,剪切时间对PLLA的非等温结晶影响影响较小。
同期刊论文项目
同项目期刊论文
Thermal and phase-separation behavior of injection-molded poly(l-lactic acid) poly(d-lactic acid) bl
Development of nanofluorapatite polymer-based composite for bioactive orthopedic implants and prosth
Preparation, characterization, and in vitro osteoblast functions of a nano-hydroxyapatite/polyethere
Preparation and characterization of bioactive and degradable composites containing ordered mesoporou
Unique Crystallization Behavior of Poly(L-lactic acid) Nucleated by Stereocomplex with Different Fin
Degradability and cytocompatibility of tricalcium phosphate/poly(amino acid) composite as bone tissu
Preparation, Characterization, In vitro Bioactivity, and Cellular Responses to a Polyetheretherketon
Preparation and properties of BSA-loaded microspheres based multi-(amino acid) copolymer for protein
Tissue engineering scaffolds of mesoporous magnesium silicate and poly (ε-caprolactone)-poly(ethylen
Improvement of bioactivity, degradability, and cytocompatibility of biocement by addition of mesopor
期刊信息
位置：