Mechanical properties of PLA reinforced by acterial cellulose

摘要：

cellulose produced by culturing Acetobacter xylinum in SH (Schramm and Hestrin) medium is a unique biopolymer in terms of micro-morphology structure, biocompatibility, mechanical strength and chemical stability. In this paper, polylactic acid (PLA)/bacterial cellulose (BC) composites (PLA/BC) were prepared by solution casting method. Moreover, polyethylene glycol (PEG) was employed to improve the compatibility of PLA and BC. Tensile strength test showed that the tensile strength of PLA/BC was significantly increased, 105 MPa versus 35 MPa of pure PLA. The superior tensile strength value was attributed to the uniform, continuous, and straight nano-scalar 3-D network structure. Contact angle test showed that the addition of PEG could increase the hydrophilicity of PLA and reinforced the interfacial bonding of PLA and BC. The tensile strength of PEG/PLA/BC composites was up to 115 MPa.

关键词： bacterial cellulose polylactic acid mechanical properties contact angle compatibility

作者: Xiang Zhang Shiyan Chen Shuaike Shi Xin Li Wei Shen Weili Hu Huaping Wang

作者单位: State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University, Shanghai 201620, China

会议类型: 国际会议

会议名称: The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）