对叔丁基杯_8_芳烃成核剂对聚乳酸结晶行为的影响.pdf

2010 39 9 PETROCHEM ICAL TECHNOLOGY ! 1001! [8] 温 亮, 辛 忠, 胡东康 ( , 200237) [] DSC POM [ 8] ( TBC 8- d), TB C8- d, , TBC8- d 14. 1 11. 1% ; TBC 8- d, , TB C8- d , ; TBC8- d [] ; ; ; [] 1000- 8144 ( 2010) 09- 1001- 05 [] TQ 316. 6 [] A Effect ofp tertButylcalix[ 8] arene NucleatingAgent on Crystallization of Polylactic Acid W e Lia g, X i Zho g,Hu Do gka g ( StateK ey L aboratory of Chem ical E g i eeri g, UN ILAB Research Ce ter of Chem ical Reactio E g i eeri g, East Chi a U iversity of Scie ce a d T ech o logy, Sha ghai 200237, Chi a) [Abstract] Effects of ucleati g age t p tertbutylcalix [ 8] are e( TBC8d) o crystallizatio a d m elti g behav iour of polylactic acid ( PLA ) w ere studied by m ea s of D SC a d POM. The resu lts show ed that TBC8d w as a good ucleati g age t a d after additio of TBC8d, crystallizatio temperature a d relative crystalli ity of PLA i creased by 14. 1 a d 11. 1% , respectively. The ucleati g ability of TBC8d w as stro ger tha that of the co ve tio al ucleati g age t talcum pow der. Isotherm al crystallizatio ki etics of PLA show ed that add itio of TBC8d could decrease the half crystallizatio tmi e a d i crease the crystallizatio rate co sta t. The crystallizatio of PLA w ith TBC8d ucleati g age t w as through threedmi e sio spherulite grow th w ith heteroge eous ucleatio . [K eywords] ucleati g age t; polylactic acid; crystallizatio ; p tertbuty lcalixare e [ 1] ,