%0 journal article
%@ 0266-3538
%A Wong, T.,Behl, M.,Yusoff, N.,Li, T.,Wahit, M.,Ismail, A.,Zhao, Q.,Lendlein, A.

%D 2020
%J Composites Science and Technology
%N 
%P 108138 
%R doi:10.1016/j.compscitech.2020.108138
%T Bio-based composites from plant based precursors and hydroxyapatite with shape-memory capability
%U https://doi.org/10.1016/j.compscitech.2020.108138
 
%X A series of bio-based composites consisting of degradable thermoset poly[xylitol-(1,12-dodecanedioate)] (PXD) and hydroxyapatite microparticles (HA) was prepared. Equimolar amounts of xylitol and 1,12-dodecanedioic acid were reacted under catalyst-free polyesterification and the synthesized composites (PXDHCy) consist HA particles ranging between 0 wt% and 20 wt%. Crystallinity of the polymer matrix decreased at low content of HA (5 wt%) as the microparticles hindered crystallization of 1,12-dodecanedioate segment and then increased when the content of HA was raised (from 10 wt% to 20 wt%) as the polymer chains crystallized on surface of microparticles. All PXD and PXDHCy are able to hydrolytically degrade with around 7 wt% to 20 wt% mass loss after 16 weeks incubation in water (rate depends on HA content). The capability of PXD and PXDHCy composites to keep a temporary shape after a deformation process correlated with the polymer crystallinity whereas the shape recovery was 99%. The switching temperatures of PXD and PXDHCy composites ranged around 50 °C (and correlated to the melting-transition temperature) and did not vary with the loading of HA. A prototype of PXDHCy composite smart fixation plug was demonstrated and showed excellent potential to be used as bio-based fixation device for household appliances.