Morphology and performance relationship studies on biodegradable ternary blends of poly(3-hydroxybutyrate-co-3-hydroxyvalerate), polylactic acid, and polypropylene carbonate

Abstract

Morphological arrangement leads to biodegradable stiffness–toughness–HDT balanced ternary blends.

Sustainable and high‐performance ternary blends from polylactide, CO2‐based polyester and microbial polyesters with different chemical structure

“…In the PLA/PPC/PHBV blend, the enhanced cold crystallization is mainly owing to the nucleating effect from the PHBV crystals. 28 In contrast, owing to the good compatibility of PLA and P 34 HB (CJ), the plasticization from the low T g P 34 HB(CJ) will remarkably improve the mobility of the PLA segment, which is greatly helpful for the cold crystallization of PLA. As for the blends with PHBHHx and P 34 HB(GB), mechanism mentioned above has a very limited incentive effect because of their limited compatibility and crystallization ability.…”

“…Considering the limited miscibility, the enhancement of the chain mobility only occurs near the interface for these blend due to the enrichment of shorter chain ends and small molecular impurities, and so forth. 28,33 Consequently, even though the small number of imperfect crystals of PHBHHx or P 34 HB(GB), localized and free mobility chain at the interface may play a degree of positive roles on cold crystallization of PLA, the impact is also extremely limited for the blend of PHBHHx and P 34 HB(GB).…”

“…Considering both PHBV and PLA may crystallize at this temperature region, the exothermic peaks from crystallization of PLA and PHBV maybe overlapped, making it be difficult to clearly assign the peaks. Mohanty et al 28 have reported that the PHBV crystal may play a nucleating role for PLA, which will shift the T c of PLA to high temperature. However, the PLA phase may play a negative effect on the crystallization of PHBV during the cooling process.…”

“…Nevertheless, to the best of our knowledge, there is seldom report on ternary blends from PPC, PHAs, and PLA. 28 Considering the good complementary properties of PLA, PPC, and PHAs components, it is very necessary to systematically study the multiphase blend from PLA, PPC, and the PHAs family to deeply understand the phase behavior and property relationship. In present work, we prepared a ternary blend of PLA, PPC, and PHAs with different chemical chain structures by the cost-effective melt-blending method to obtain a fully sustainable and toughened multiphase biobased polyesters blends with a good balance of properties.…”

Development of Toughened Flax Fiber Reinforced Composites. Modification of Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends by Reactive Extrusion Process

“…Unfortunately, beside the effectiveness of this approach the addition of non-degradable petroleum-based cannot be consider as sustainable solution, which is the reason for development of new methods involving blending PLA with other elastomeric or soft biopolymers. So far, the different research studies confirmed the effectiveness of different types of biopolymers, like polycaprolactone-PCL [39][40][41][42][43], polyhydroxybutyrate-PHB [44][45][46][47][48], thermoplastic starch-TPS [49][50][51], poly(-3-hydroxybutyrate-co-3-hydroxyvalerate)-PHBV [52][53][54][55][56]. However, the most likely used biopolymer was PBAT, probably because of its popularity in foil production industry [2,[57][58][59].…”