Yayınlanmış 1 Ocak 2012
| Sürüm v1
Dergi makalesi
Açık
Synthesis of Some Novel Blends of Polylactide with Polylactide-b-Poly (ethylene glycol) Block Copolymers
Oluşturanlar
- 1. Uludag Univ, Dept Chem, Bursa, Turkey
- 2. Zonguldak Karaelmas Univ, Dept Chem, TR-67100 Zonguldak, Turkey
Açıklama
The synthesis of polylactide (PLA)-b-polyethylene glycol (PEG) linear block copolymers and their use in blends with pure-PLA is described. PLA-b-PEG linear block copolymers were obtained by the reaction between poly(ethylene glycol) bis (2-aminopropyl ether) (molecular weight 2000 Dalton) with PLA in the presence of stannous octoate via trans esterification. Molecular weight measurements of the block copolymers indicated that AB and ABA type block copolymers were obtained by controlling the feed ratio in the trans esterification reactions. The copolymers obtained were purified by the fractional precipitation and then characterized by H-1-NMR, FTIR, GPC and DSC techniques. Blends of pure PLA with PLA-b-PEG displayed improved mechanical properties compared to pure PLA. Thermal, mechanical and morphological characterization of the blends were also conducted.
Dosyalar
bib-c6bbb0d4-4fbd-4f03-ad88-5ad1992849f6.txt
Dosyalar
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