## Abstract Stereoblock poly(lactic acid) (sb‐PLA) is incorporated into a 1:1 polymer blend system of poly(L‐lactic acid) (PLLA) and poly(D‐lactic acid) (PDLA) that has a high molecular weight to study its addition effect on the stereocomplex (sc) formation of PLLA and PDLA. The ternary polymer ble
Crystal density and heat of fusion for a stereo-complex of poly(L-lactic acid) and poly(D-lactic acid)
✍ Scribed by Daisuke Sawai; Yasuhito Tsugane; Masanori Tamada; Tetsuo Kanamoto; Moon Sungil; Suong-Hyu Hyon
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 189 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0887-6266
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## Abstract **Summary:** Stereoblock poly(lactic acid) consisting of D‐ and L‐lactate stereosequences can be successfully synthesized by solid‐state polycondensation of a 1:1 mixture of poly(L‐lactic acid) and poly(D‐lactic acid). In the first step, melt‐polycondensation of L‐ and D‐lactic acids is
## Abstract The crystal modifications and multiple melting behavior of poly(L‐lactic acid‐__co__‐D‐lactic acid) (98/2) as a function of crystallization temperature were studied by wide‐angle X‐ray diffraction (WAXD) and differential scanning calorimetry (DSC). It was found that the disorder (α′) an
This article investigated the effects of electron beam (EB) irradiation on poly(D,L-lactic acid)-b-poly-(ethylene glycol) copolymer (PLEG) and poly(L-lactic acid) (PLLA). The dominant effect of EB irradiation on both PLEG and PLLA was chain scission. With increasing dose, recombination reactions or