分享到:

PLLA/β-TCP复合骨折内固定材料的体外降解性能的研究

对自行研制的可吸收PLLA/β-TCP复合骨折内固定材料的体外降解性能进行评价。在体外降解实验中,将含量为20%、30%、40%、50%的β-TCP和单纯PLLA试件分别置  (本文共3页) 阅读全文>>

《Chinese Chemical Letters》2006年06期
Chinese Chemical Letters

A New Route for Preparation of β-TCP/ PLLA Composite

A new facile route for preparation of β-TCP/PLLA composites is reported in this letter. SEM images display that β-TCP particles with average diameter of 400 nm were well bonded and distributed within the pore walls of the PLLA scaffolds. The mixture of...  (本文共4页) 阅读全文>>

《材料导报》2020年12期
材料导报

PLLA/TPEE/TMC-210三元复合材料的制备及性能研究

针对聚乳酸(PLLA)结晶速率慢、韧性差的不足,该研究通过熔融共混挤出法添加成核剂苯基膦酸锌(TMC-210)来提高PLLA的结晶性能,同时添加弹性体聚酯橡胶(TPEE)来增加其韧性,从而达到改性PLLA的目的。利用差示扫描量热仪(DSC)、X射线衍射仪(XRD)、偏光显微镜(POM)、扫描电子显微镜(SEM)、力学性能测试等手段对改性后的PLLA进行表征。结果表明,在PLLA/TMC-2...  (本文共5页) 阅读全文>>

《宁夏大学学报(自然科学版)》2018年04期
宁夏大学学报(自然科学版)

芳基取代酰肼类化合物对PLLA-PPC合金性能的影响

针对聚L-乳酸(PLLA)-聚碳酸亚丙酯(PPC)合金结晶速率慢及韧性低的问题,将质量分数为0.4%的高效成核剂——芳基取代酰肼类化合物(TMBH)加入PLLA/PPC合金中,研究TMBH对PLLA-PPC合金结晶及力学性能的影响.结果表明,在添加TMBH的PLLA-PPC合...  (本文共9页) 阅读全文>>

《Chinese Journal of Polymer Science》2019年03期
Chinese Journal of Polymer Science

Influence of Chain Architectures on Crystallization Behaviors of PLLA Block in PEG/PLLA Block Copolymers

The effect of the architecture of poly(ethylene glycol)/poly(L-lactide)(PEG/PLLA) block copolymers on the non-isothermal crystallization behaviors of PLLA blocks was investigated by differential scanning calorimetry(DSC) and wide angle X-ray diffraction(WAXD). 1-Arm MPEG-b-PLLA and 4-arm PEG-b-PLLA(4PEG-b-PLLA) were synthesized by the ring-opening polymerization of Llactide in the presence of poly(ethylene glycol) me...  (本文共13页) 阅读全文>>

《Chinese Journal of Polymer Science》2019年03期
Chinese Journal of Polymer Science

Enhanced Crystallization Kinetics of PLLA by Ethoxycarbonyl Ionic Liquid Modified Graphene

To investigate the performance of graphene(Gra) modified with ethoxycarbonyl ionic liquid(IL), chain mobility and crystallization kinetics of poly(L-lactic acid)(PLLA), a series of PLLA nanocomposites have been prepared using solution-cast method.IL can improve the dispersion of Gra in PLLA matrix and the samples containing...  (本文共12页) 阅读全文>>