Tributyl citrate as an effective plasticizer for biodegradable polymers: effect of plasticizer on free volume and transport and mechanical properties. - Chaos, Ana; Sangroniz, Ainara; Gonzalez, Alba; Iriarte, Marian; Sarasua, Jose‐Ramon; del Río, Javier; Etxeberria, Agustin (Polymer International, 2019)