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[求助]
结晶度的计算 已有1人参与
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自己在做PLLA/PDLA共混物的结晶项目,但是不会计算生成的立构复合物的结晶度,文献上又很难找,故求助 假如PLLA/PDLA的比例为60/40(wt/wt),怎么计算sc-PLA的结晶度和总的结晶度,求列出详细公式,不胜感激..... |
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【答案】应助回帖
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X_c (%)=(ΔH_m1+ΔH_m2-ΔH_c)/(ΔH_m(" blend " )^0 )×100% where ΔHm1 and ΔHm2 are the melting enthalpies of α-homo crystals and SC-crystals, respectively; and ΔHmo(Blend) is the theoretical value for the melting enthalpy of 100% perfect crystals, including perfect α-homo crystals of PLLA (or PDLA) (ΔHm1o = 106 J/g) and SC crystals (ΔHm2o = 142 J/g) 具体看文献哈 Reference: Poly (lactic acid) blends: Processing, properties and applications https://doi.org/10.1016/j.ijbiomac.2018.12.002 |
2楼2022-12-14 00:05:04













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