:PS
?? . ?????????????(Precipitation with a Compressed Antisolvent, PCA)????????PS/PMMA????????144,000 ?44,000 ?PS ???????85,000 ?36,000?PMMA ???????PS/PMMA ???????????CO2 ?????,?????PS/PMMA ?????????????????????????PS/PMMA ????CO2?????????CO2 ????????????CO2 ???????????????. ?? . ???????,????????????(
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