In this section, you can access to the latest technical information related to the FUTURE project topic.

Toughening modification of PLLA with PCL in the presence of PCL?b?PLLA diblock copolymers as compatibilizer

To obtain an effective compatibilizer for the blends of poly(L?lactide) (PLLA) and poly(??caprolactone) (PCL), the diblock copolymers PCL?b?PLLA with different ratios of PCL/PLLA (CL/LA) and different molecular weights (Mn) were synthesized by ring?opening polymerization (ROP) of L?lactide with monohydric poly(??caprolactone) (PCL?OH) as a macro?initiator. These copolymers were melt blended with PLLA/PCL (80/20) blend at contents between 3.0 and 20 phr (parts per hundred resin), and the effects of added PCL?b?PLLA on the mechanical, morphological, rheological, and thermodynamic properties of the PLLA/PCL/PCL?b?PLLA blends were investigated. The compatibility between PLLA matrix and PCL phase was enhanced with decreasing in CL/LA ratios or increasing in Mn for the added PCL?b?PLLA. Moreover, the crystallinity of PLLA matrix increased because of the added compatibilizers. The PCL?b?PLLA with the ratio of CL/LA (50/50) and Mn ? 39.0 kg/mol were effective compatibilizers for PLLA/PCL blends. When the content of PCL?b?PLLA is greater than or equal to 5 phr, the elongations at break of the PLLA/PCL/PCL?b?PLLA blends all reached approximately 180%, about 25 times more than the pristine PLLA/PCL(80/20) blend.

» Author: Sheng Xiang, Lidong Feng, Xinchao Bian, Bao Zhang, Bin Sun, Yanlong Liu, Gao Li, Xuesi Chen

» Reference: doi:10.1002/pat.4530

» Publication Date: 04/02/2019

» More Information

« Go to Technological Watch



AIMPLAS Instituto Tecnológico del Plástico

C/ Gustave Eiffel, 4
(València Parc Tecnològic) - 46980
PATERNA (Valencia) - SPAIN

PHONE

(+34) 96 136 60 40

EMAIL

Project Management department - Sustainability and Industrial Recovery
life-future-project@aimplas.es