Thermal Properties and Biodegradability Studies of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)

Shang, Longan; Fei, Qiang; Zhang, Yan Hui; Wang, Xian Zheng; Fan, Daidi; Chang, Ho Nam

doi:10.1007/s10924-011-0362-9

Cited by 64 publications

(41 citation statements)

References 26 publications

(33 reference statements)

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“…Increasing PHB surface area and porosity increases the available binding sites for biological enzymatic degradation and may therefore increase hydrolysis rates (Shang et al, 2012). Hydrolysis of recalcitrant substrates can be the rate-limiting step in methanogensis, thus pretreatments that can facilitate increased rates of hydrolysis may increase the rate of methanogenesis (Venkiteshwaran et al, 2015).…”

Section: Bioplastic Pretreatment and Bmp Assaysmentioning

confidence: 99%

Pretreatment and Anaerobic Co-digestion of Selected PHB and PLA Bioplastics

Benn

Zitomer

2018

Front. Environ. Sci.

102

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Conventional petroleum-derived plastics are recalcitrant to biodegradation and can be problematic as they accumulate in the environment. In contrast, it may be possible to add novel, biodegradable bioplastics to anaerobic digesters at municipal water resource recovery facilities along with primary sludge to produce more biomethane. In this study, thermal and chemical bioplastic pretreatments were first investigated to increase the rate and extent of anaerobic digestion. Subsequently, replicate, bench-scale anaerobic co-digesters fed synthetic primary sludge with and without PHB bioplastic were maintained for over 170 days. Two polyhydroxybutyrate (PHB), one poly(3-hydroxybutyrate-co-4-hydroxybutyrate) and one polylactic acid (PLA) bioplastic were investigated. Biochemical methane potential (BMP) assays were performed using both untreated bioplastic as well as bioplastic pretreated at elevated temperature (35-90 • C) under alkaline conditions (8

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Section: Bioplastic Pretreatment and Bmp Assaysmentioning

confidence: 99%

Pretreatment and Anaerobic Co-digestion of Selected PHB and PLA Bioplastics

Benn

Zitomer

2018

Front. Environ. Sci.

102

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“…Petroleum-based non-biodegradable synthetic plastics are cheap and convenient [1]; however, their universal use has brought great damage to the environment and ecological systems because of poor biodegradability [2][3][4]. The development of biodegradable plastics is regarded as an effective way to solve the increasingly serious environmental crisis caused by the use of non-biodegradable synthetic plastics [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effect of different amounts of modified talc on the mechanical, thermal, and crystallization properties of poly(butylene succinate)

Sun¹,

Chuai

Luo

et al. 2014

Journal of Polymer Engineering

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Poly(butylene succinate) (PBS) with different ratios of modified talc was prepared by twin-screw extruding. The effect of different loading amounts of talc on the mechanical, thermal, and crystallization properties of PBS was investigated. The mechanical test results indicate that the stiffness of the composites was increased linearly with increasing talc content, and the tensile strength and elongation stayed at relatively high levels when the talc amount is < 15 phr. Thermal gravimetric analysis showed that the thermal stability of PBS composites was improved notably with a small amount (5-10 phr) of talc; however, high loading of talc did not help further improve the thermal stability. Differential scanning calorimetry data showed that the melting enthalpy (ΔH m ), crystallization enthalpy (ΔH c ), and crystallinity degree (X c ) decreased when the talc increased and crystallization temperature (T c ) was moving to relatively high values. The results of X-ray diffraction demonstrated that the incorporation of talc inhibited the PBS crystallization behavior significantly but did not change the crystal structure. Scanning electron microscopic studies indicated that the homogeneous dispersion and smoother fracture surfaces of the composite became inhomogeneous and coarse with higher talc loading.

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“…Methane based production of degradable bioplastics-polyhydroxybutyrate (PHB) and its copolymer with valerate (PHB/V)-is promising for the biodegradable packaging of drugs and food products in biomedicine and for the encap sulation of agrochemicals in agriculture [28]. Screen ing has shown that methanotrophs with the serine С 1 metabolism accumulate large amounts of the biopoly mer [29].…”

mentioning

confidence: 99%