Relationship between compatibilizer and yield strength of PLA/PP Blend

2017 2nd International Conference on Functional Materials and Metallurgy

材料科学;冶金学

Jariyakulsith, Pattanun^1 ; Puajindanetr, Somchai^1

Department of Industrial Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok

10330, Thailand^1

关键词: Dicumyl peroxide;    Full factorial;    Linear regression models;    Poly lactic acid;    Polypropylene-grafted maleic anhydrides;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/303/1/012004/pdf
DOI  :  10.1088/1757-899X/303/1/012004

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The aim of this research is to study the relationship between compatibilizer and yield strength of polylactic acid (PLA) and polypropylene (PP) blend. The PLA is blended with PP (PLA/PP) at the ratios of 70/30, 50/50 and 30/70. In addition, (1) polypropylene grafted maleic anhydride (PP-g-MAH) as a compatibilizer at 0.3 and 0.7 part per hundred of PLA/PP resin (phr) and (2) dicumyl peroxide (DCP) being an initiator at 0.03 and 0.07 phr are added in each composition. Yield strength is characterized to study the interaction between compatibilizer, initiator and yield strength by using experimental design of multilevel full factorial. The results show that (1) the yield strength of PLA/PP blend are increased after addition of compatibilizer. Because the adding of PP-g-MAH and DCP resulted in improving compatibility between PLA and PP. (2) there are interaction between PP-g-MAH and DCP that have affected the final properties of PLA/PP blend. The highest yield strength of 27.68 MPa is provided at the ratio of 70/30 blend by using the 0.3 phr of PP-g-MAH and 0.03 phr of DCP. Linear regression model is fitted and follow the assumptions of normal distribution.