Synthesis and Thermodynamic Properties of M2L[M=Li, Na; L=3,6-Bis(1H-1,2,3,4-tetrazol-5-yl-amino)-1,2,4,5-tetrazine]

Compatibilization of the poly(lactic acid)/poly(propylene carbonate) blends through in situ formation of poly(lactic acid)‐b‐poly(propylene carbonate) copolymer

“…In addition, there was no signal of cyclic carbonate from the unzipping degradation of PPC under catalyst in Zhang et al . 's research, which might imply that the occurrence of transesterification between PLA and PPC could weaken or restrain the unzipping degradation of PPC.…”

“…In A50C50 system, the transesterification was seemly restrained to some extent because of the unbalanced reactivity point ratio according to Zhang et al . 's works which indicated that the chain scission reaction of neat PPC mostly happened preferentially in high molecular weight molecule chains under the catalysis. When the catalyst amount added to 1.0 wt %, PPC chains with reactivity point increased to participate in ester exchange reaction with PLA chains, which enhanced transesterification but also intensified chain scission reaction simultaneously.…”

“…The focus of a large proportion of studies about transesterification was the first two aspects as above, and fewer attentions were paid specially to the effect of third aspect toward the competition. Zhang et al . found that the chain scission reaction of neat PPC under catalyst firstly happened in high molecular weight molecules chain, which might cause an unequal proportion of reactivity point between PLA chains and PPC chains at 50/50 ratio of PLA/PPC, therefore the chain scission reaction had the priority compared to transesterification in such case.…”