Biodegradable toughened polymers from renewable resources: blends of polyhydroxybutyrate with epoxidized natural rubber and maleated polybutadiene

Parulekar, Yashodhan; Mohanty, Amar K.

doi:10.1039/b508213g

Cited by 80 publications

(71 citation statements)

References 30 publications

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“…Blending PHB with other (co-)polymers such as ethylenepropylene rubber (EPR) (Abbate, Martuscelli, Ragosta, & Scarinzi, 1991), epoxidized natural rubber (ENR) (Parulekar & Mohanty, 2006), poly(vinyl acetate) (PVAc) (Hay & Sharma, 2000), poly(ε-caprolactone) (PCL) (Chun & Kim, 2000), poly(butylene succinate) (PBS) (Ma, Hristova-Bogaerds, Lemstra, Zhang, & Wang, 2012;Zhang, Mohanty, & Misra, 2012), poly(butylene adipate-co-terephthalate) (PBAT) (Nagarajan, Misra, & Mohanty, 2013), poly(lactic acid) (PLA) (Gao et al, 2006;Kikkawa et al, 2006) and starch (Cheng, Peng, & Lui, 2011) is an effective way to make bio-based materials with improved properties.…”

Section: Introductionmentioning

confidence: 99%

Structure–property relationships of reactively compatibilized PHB/EVA/starch blends

Piming

Chen

et al. 2014

Carbohydrate Polymers

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a b s t r a c tA method is addressed to prepare poly(hydroxybutyrate)/poly(ethylene-co-vinyl acetate)/starch (PHB/EVA/starch) blends with fine dispersion of starch, i.e. by an in situ compatibilization in the presence of maleic anhydride (MA) and peroxide. The starch particle size is reduced from hundreds-m to sub-m after the compatibilization accompanied by an improvement in interfacial adhesion. Meanwhile, starch-in-EVA-type morphology is observed in the blends. The EVA and starch gradually changed into a (partially) co-continuous phase with increasing MA content. Consequently, toughness of the blends was improved as evidenced by an increase in elongation at break and tensile-fracture energy (work). Cavitation, fibrillation and matrix yielding are regarded as the toughening mechanism for the compatibilized blends. In addition, the T g of the EVA phase is dependent on its phase morphology in the blends while the thermal behavior of the PHB was only slightly affected by the compatibilization.

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Section: Introductionmentioning

confidence: 99%

Structure–property relationships of reactively compatibilized PHB/EVA/starch blends

Piming

Chen

et al. 2014

Carbohydrate Polymers

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“…A classical technique, mutual solvent approach to improve blend miscibility was used [22]. Firstly, PHBV and TA were completely solubilized in 1,4-dioxane at 95 C through constant stirring, the TA/ PHBV composites were prepared with different mass fractions of TA component (5,10,20,30, and 40 wt%). Then, the solution of TA/PHBV composites were cast on glass plate at 95 C and held for 5 min to evaporate the solvent.…”

Section: Preparation Of Ta/phbv Composite Filmsmentioning

confidence: 99%

Natural polyphenol tannic acid reinforced poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) composite films with enhanced tensile strength and fracture toughness

Wang

et al. 2014

Polymer Composites

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Novel fully biodegradable composites were successfully prepared by solution casting. The mechanical properties, chemical structure and intermolecular interaction, the melting and crystallization behaviors, and crystalline morphologies of the Tannic acid (TA)/PHBV composites were investigated. Uniaxial tensile mechanical testing results show that both tensile strength and fracture toughness were enhanced. Fourier transform infrared (FTIR) results confirm the intermolecular hydrogen bonding interactions in composites. Differential scanning calorimetric (DSC) studies show that there is a significant increase in T g and T cc , and a decrease in melting temperature of TA/ PHBV composites. The crystal growth behaviors and crystalline morphologies results were showed that with the addition of TA component, the size of PHBV spherulites reduces, and the number of PHBV spherulites increases significantly. POLYM. COMPOS., 36:2303-2308, 2015

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“…The mechanism of this reaction is presented in Figure 17. Epoxidized natural rubber was also successfully used as reactive compatibilizer for poly(3-hydroxybutyrate) and aliphatic polyesters blends [136][137][138]. Jaratrotkamjorn et al [139] modified PLA via meltblending with natural rubber (NR), epoxidized natural rubber (ENR), and poly(methyl methacrylate) grafted natural rubber grafted (NR-g-PMMA).…”

Section: Aliphatic Polyester/natural Rubber Blendsmentioning

confidence: 99%

Reactive extrusion of bio-based polymer blends and composites – Current trends and future developments

Formela¹,

Zedler²,

Hejna³

et al. 2018

Express Polym. Lett.

112

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Abstract.Reactive extrusion is a cost-effective and environmentally-friendly method to produce new materials with enhanced performance properties. At present, reactive extrusion allows in-situ polymerization, modification/functionalization of polymers or chemical bonding of two (or more) immiscible phases, which can be carried out on commonly used extrusion lines. Although reactive extrusion has been known for many years, its application for processing of bio-based polymer blends and composites is a relatively new direction of scientific research. This work presents a literature review on recent advances in the processing of bio-based polymer blends and composites via reactive extrusion. We described compatibilization mechanisms for different types of biodegradable polymeric materials based on: (i) aliphatic polyesters, (ii) aliphatic polyesters/starch and (iii) aliphatic polyester/natural rubber systems. A special attention was focused on conventional and dynamic cross-linking of bio-based polymer blends and composites as an effective way to prepare new materials with unique properties e.g. biodegradable thermoplastic elastomers or shape-memory materials. Advantages and limitations affecting future trends in development of biodegradable polymer blends and composites reactive extrusion are also discussed.

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Biodegradable toughened polymers from renewable resources: blends of polyhydroxybutyrate with epoxidized natural rubber and maleated polybutadiene

Cited by 80 publications

References 30 publications

Structure–property relationships of reactively compatibilized PHB/EVA/starch blends

Structure–property relationships of reactively compatibilized PHB/EVA/starch blends

Natural polyphenol tannic acid reinforced poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) composite films with enhanced tensile strength and fracture toughness

Reactive extrusion of bio-based polymer blends and composites – Current trends and future developments

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