TY - JOUR
AU - Zhang, Hui-Liang
AB - Binary biodegradable polymers films, poly(butylene adipate-co-terephthalate) (PBAT) and poly(glycolic acid) (PGA), were prepared through batch melt mixing to obtain Film I and Film II under two different processing conditions. PGA crystals played a major role in enhancing the mechanical and barrier properties of the films. For Film I, there were initial PGA crystals before the film blowing process, the PGA molecular chain further crystallized, forming the oriented crystallization of PGA. Moreover, the Xc and crystalline size in Film I were higher than those in Film II. Compared with the different processing methods, Film I has excellent mechanical and oxygen barrier properties due to the crystallization and orientation. The tensile strength reached 45.0 MPa, and tear strength exceeded 138.2 kN/m, while the elongation at break was as high as 750% for PBAT/PGA 85/15 in Film I. The WVTR, WVP coefficients, and OP coefficients of PBAT/PGA films were decreased obviously with increasing the PGA content both in Film I and Film II. Moreover, the barrier properties of oxygen in Film I were better than that in Film II. This work reveals a feasible processing technique by introducing of initial crystallization of PGA to blow PBAT/PGA films with excellent mechanical and barrier properties.
TI - Biodegradable Poly(butylene adipate-co-terephthalate)/Poly(glycolic acid) Films: Effect of Poly(glycolic acid) Crystal on Mechanical and Barrier Properties
JF - Chinese Journal of Polymer Science
DO - 10.1007/s10118-023-2934-2
DA - 2023-07-01
UR - https://www.deepdyve.com/lp/springer-journals/biodegradable-poly-butylene-adipate-co-terephthalate-poly-glycolic-k6Y7b8L5j5
SP - 1123
EP - 1132
VL - 41
IS - 7
DP - DeepDyve
ER -