柠檬酸改性碳酸钙/聚乳酸复合材料的制备及性能研究  

Preparation and Properties of Citric Acid Modified Calcium Carbonate/polylactic Acid Composites

作　　者：李媛媛 戎建鑫 张庆新[1,2] LI Yuan-yuan;RONG Jian-xin;ZHANG Qing-in(Hebei Key Laboratory of Functional Polymers,School of Chemical Engineering,Hebei University of Technology;Tianjin Key Laboratory of Layered Composite and Interface Control Technology,Tianjin 330130)

机构地区：[1]河北省功能高分子重点实验室,河北工业大学化工学院 [2]天津市材料层状复合与界面控制技术重点实验室,天津330130

出　　处：《胶体与聚合物》2020年第4期165-168,共4页Chinese Journal of Colloid & Polymer

基　　金：河北省自然科学基金(B2017202281、E2019202348);国家自然科学基金(51573037)。

摘　　要：聚乳酸(PLA)因其环境友好性、良好的生物相容性和可降解性而受到广泛关注。然而,较差的机械性能限制了其实际应用。纳米碳酸钙(CaCO3)是一种重要的无机增韧增强功能性填料,具有无毒、成本低等优点。为了改善纳米碳酸钙与高分子材料之间的分散性和相容性,需要对其进行表面改性。利用安全环保的柠檬酸改性碳酸钙,并通过溶液浇筑法成功制备了聚乳酸/碳酸钙复合材料。研究表明:改性后的碳酸钙能有效提高聚乳酸复合材料的力学性能。Polylactic acid(PLA) polymers have received intensive attention due to their environmental friendliness, good bio-compatibility, and degradability. However, their poor mechanical property surely limits practical utilization. Nano calcium carbonate(CaCO3) is an important inorganic toughening and reinforcing functional filler, which has the advantages of non-toxicity and low cost. In order to improve the dispersibility and compatibility between nano-calcium carbonate and polymer materials, surface modification is needed.Utilizing safe and environmentally friendly citric acid modified calcium carbonate, and successfully prepared polylactic acid/calcium carbonate composites by solution casting method. The mechanical test results show that the modified calcium carbonate can effectively improve the mechanical properties of polylactic acid composites.

关 键 词：聚乳酸 碳酸钙 柠檬酸 力学性能 

分 类 号：TQ326.9[化学工程—合成树脂塑料工业]