Maqola

Miscibility and Hydrogen-Bonding Interactions in Biodegradable Polymer Blends of Poly(3-hydroxybutyrate) and a Partially Hydrolyzed Poly(vinyl alcohol)

He HuangDepartment of Chemistry, School of Science and Technology and Research Center for Environmental Friendly Polymers, Kwansei-Gakuin University, Gakuen, Sanda 669-1337, Japan, College of Materials Science & Engineering, Donghua University, Shanghai 200051, China, School of Chemistry and Materials Science, Hubei University, Wuhan 430062, China, and The Procter & Gamble Company, 8611 Beckett Road, West Chester, Ohio 45069Yun HuDepartment of Chemistry, School of Science and Technology and Research Center for Environmental Friendly Polymers, Kwansei-Gakuin University, Gakuen, Sanda 669-1337, Japan, College of Materials Science & Engineering, Donghua University, Shanghai 200051, China, School of Chemistry and Materials Science, Hubei University, Wuhan 430062, China, and The Procter & Gamble Company, 8611 Beckett Road, West Chester, Ohio 45069Jianming ZhangDepartment of Chemistry, School of Science and Technology and Research Center for Environmental Friendly Polymers, Kwansei-Gakuin University, Gakuen, Sanda 669-1337, Japan, College of Materials Science & Engineering, Donghua University, Shanghai 200051, China, School of Chemistry and Materials Science, Hubei University, Wuhan 430062, China, and The Procter & Gamble Company, 8611 Beckett Road, West Chester, Ohio 45069Harumi SatoDepartment of Chemistry, School of Science and Technology and Research Center for Environmental Friendly Polymers, Kwansei-Gakuin University, Gakuen, Sanda 669-1337, Japan, College of Materials Science & Engineering, Donghua University, Shanghai 200051, China, School of Chemistry and Materials Science, Hubei University, Wuhan 430062, China, and The Procter & Gamble Company, 8611 Beckett Road, West Chester, Ohio 45069Hongtao ZhangDepartment of Chemistry, School of Science and Technology and Research Center for Environmental Friendly Polymers, Kwansei-Gakuin University, Gakuen, Sanda 669-1337, Japan, College of Materials Science & Engineering, Donghua University, Shanghai 200051, China, School of Chemistry and Materials Science, Hubei University, Wuhan 430062, China, and The Procter & Gamble Company, 8611 Beckett Road, West Chester, Ohio 45069Isao NodaDepartment of Chemistry, School of Science and Technology and Research Center for Environmental Friendly Polymers, Kwansei-Gakuin University, Gakuen, Sanda 669-1337, Japan, College of Materials Science & Engineering, Donghua University, Shanghai 200051, China, School of Chemistry and Materials Science, Hubei University, Wuhan 430062, China, and The Procter & Gamble Company, 8611 Beckett Road, West Chester, Ohio 45069Yukihiro OzakiDepartment of Chemistry, School of Science and Technology and Research Center for Environmental Friendly Polymers, Kwansei-Gakuin University, Gakuen, Sanda 669-1337, Japan, College of Materials Science & Engineering, Donghua University, Shanghai 200051, China, School of Chemistry and Materials Science, Hubei University, Wuhan 430062, China, and The Procter & Gamble Company, 8611 Beckett Road, West Chester, Ohio 45069

2005en

ABI

Annotatsiya

Miscibility and hydrogen-bonding interactions, as well as the morphological properties, of biodegradable polymer blends of poly(3-hydroxybutyrate) (PHB) and a 80% hydrolyzed poly(vinyl alcohol) (PVA80) were studied using Fourier transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). It was found that PHB is miscible with PVA80 in the amorphous phase over the whole composition range. PVA80 or PHB assumes the amorphous state when its content in the blend is lower than 30 or 20 wt %, respectively. Due to the heavy overlapping of C=O stretching bands from both PVA80 and PHB and the nonmeasurable peak shift in the OH stretching band region, hydrogen-bonding interactions between the OH group of PVA80 and the C=O group of PHB were not detectable at room temperature, but were observed at a higher temperature of 180 degrees C. This is because hydrogen-bonding interactions are promoted above the melting points of these two crystalline polymers, by increasing the mixing entropy and reducing the Deltachi effect. Blending PHB with PVA80 does not have a significant effect on the OH groups of PVA80 that are hydrogen bonded with each other. Instead, the C=O groups of PHB dispossess some of the OH groups that are hydrogen bonded to the C=O groups of PVA80, which gives rise to the miscibility between PVA80 and PHB in the amorphous phase.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1021/jp0532162

Iqtiboslar va manbalar

2 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar