Poly(beta-hydroxybutyrate) (PHB) is a biotechnologically produced polyester, highly crystalline, totally biodegradable with low versatility in mechanical properties. To overcome this problem we performed a reactive blending procedure with a glassy acrylic polymer, poly(methyl methacrylate) (PMMA), via water suspension polymerisation of the acrylic monomer precursor onto poly(beta-hydroxybutyrate). It was possible to isolate the co-polymeric phase formed between the two polymers and to characterize it using NMR and differential scanning calorimetry (DSC) techniques. Fracture tests on the blends gave a satisfactory response: in fact the Critical Energy Release Factor (Gc) calculated by Linear Elastic Fracture Mechanism (LEFM) theory of a PHB/PMMA 70/30 wt/wt blend is less than two times larger than that of neat PHB.

Preparation of poly(b-hydroxybutyrate)/poly(methylmethacrilate) blends by reactive blending and their characterisation / M., Avella; M. E., Errico; B., Immirzi; M., Malinconico; Falcigno, Lucia; L., Paolillo. - In: MACROMOLECULAR CHEMISTRY AND PHYSICS. - ISSN 1022-1352. - ELETTRONICO. - 199:(1998), pp. 1901-1907. [10.1002/(SICI)1521-3935(19980901)199:9<1901::AID-MACP1901>3.0.CO;2-W]

Preparation of poly(b-hydroxybutyrate)/poly(methylmethacrilate) blends by reactive blending and their characterisation

FALCIGNO, LUCIA;
1998

Abstract

Poly(beta-hydroxybutyrate) (PHB) is a biotechnologically produced polyester, highly crystalline, totally biodegradable with low versatility in mechanical properties. To overcome this problem we performed a reactive blending procedure with a glassy acrylic polymer, poly(methyl methacrylate) (PMMA), via water suspension polymerisation of the acrylic monomer precursor onto poly(beta-hydroxybutyrate). It was possible to isolate the co-polymeric phase formed between the two polymers and to characterize it using NMR and differential scanning calorimetry (DSC) techniques. Fracture tests on the blends gave a satisfactory response: in fact the Critical Energy Release Factor (Gc) calculated by Linear Elastic Fracture Mechanism (LEFM) theory of a PHB/PMMA 70/30 wt/wt blend is less than two times larger than that of neat PHB.
1998
Preparation of poly(b-hydroxybutyrate)/poly(methylmethacrilate) blends by reactive blending and their characterisation / M., Avella; M. E., Errico; B., Immirzi; M., Malinconico; Falcigno, Lucia; L., Paolillo. - In: MACROMOLECULAR CHEMISTRY AND PHYSICS. - ISSN 1022-1352. - ELETTRONICO. - 199:(1998), pp. 1901-1907. [10.1002/(SICI)1521-3935(19980901)199:9<1901::AID-MACP1901>3.0.CO;2-W]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/373797
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