PLA and ramie yarn were dried at 50 C in vacuum for 10 h. The dried PLA, tin (II) octoate (99%) as catalyst, triphenyl phosphite (TPP) as stabilizer and diisocyanate (HDI or MDI or IPDI) were firstly well mixed by a high speed mixer
PLA and ramie yarn were dried at 50 C in vacuum for 10 h. Thedried PLA, tin (II) octoate (99%) as catalyst, triphenyl phosphite(TPP) as stabilizer and diisocyanate (HDI or MDI or IPDI) werefirstly well mixed by a high speed mixer