Characterization and in vitro degradation of poly(octadecanoic anhydride)

Dong, Anjie; Zhang, Jinwei; Jiang, Kai; Deng, Liandong

doi:10.1007/s10856-007-3166-7

Cited by 10 publications

(11 citation statements)

References 37 publications

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“…Degradation or weight loss of samples can be determine by the fraction of initial disk weight (W o ) and disk weight after a particular period (W t ), as mention in equation 1 [18,19]:…”

Section: In Vitro Biodegradation Measurementmentioning

confidence: 99%

Biodegradation Studies in Vitro of Novel Poly(adipic anhydride-co-mannitol)-N-maleoyl Chitosan Networks

Journal¹

2016

Baghdad Sci.J

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In this work, novel copolymers of poly(adipic anhydride-co-mannitol) were synthesized by melting condensation polymerization of poly(adipic anhydride) with five percentages of mannitol sugar, 1 to 5 Wt.%. These copolymers were purified and then, characterized by FT-IR, which was proved that the cross-linking reaction was caused by nucleophilic attack of mannitol hydroxyl group to acidic anhydride groups of poly(adipic anhydride) backbone and new ester groups were formed and appeared. Also, modified organic-soluble chitosan, N-maleoyl-chitosan, were synthesized by grafting reaction of chitosan with maleic anhydride in DMF as solvent, and it was also purified and characterized by FT-IR. Biodegradation in vitro of the IPNs of poly(adipic anhydride-co-mannitol)-N-maleoyl chitosan networks were evaluated by hydrolytic degradation studies at three different media (PBS, SIF and SGF) for 18 weeks with 92% as maximum degradation and it was found that minimum weight loss of IPNs was noticeably shown in SIF. In addition, hydrolytic degradation percent was decreased with increasing mannitol proportions.

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“…Degradation or weight loss of samples can be determine by the fraction of initial disk weight (W o ) and disk weight after a particular period (W t ), as mention in equation 1 [18,19]:…”

Section: In Vitro Biodegradation Measurementmentioning

confidence: 99%

Biodegradation Studies in Vitro of Novel Poly(adipic anhydride-co-mannitol)-N-maleoyl Chitosan Networks

Journal¹

2016

Baghdad Sci.J

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“…DSC determined the transition temperature of the oligomers. Melting temperature of PSA was given in literature 18–22. It was 68–82°C in function of structure and masse.…”

Section: Resultsmentioning

confidence: 99%

Oligomers of poly(anhydride): Study of interaction in coating binder

Lasne-Deschamps

Faÿ

Sire

et al. 2012

J of Applied Polymer Sci

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Polyanhydrides are largely used in biomedical and pharmaceutical fields because of their biodegradability and controlled degradation. In this work, oligomers were investigated as film binders for environmental applications. To overcome the main disadvantages of polyanhydrides (low solubility in common solvents and high melting points), oligomers based on sebacic acid were prepared. Characterization was carried out by nuclear magnetic resonance and electrospray ionization to obtain chemical structures of the products. The formation of weak interactions, which confer cohesion between chains, allows film properties to be observed. The impact of the solvent polarity on the specific organization was investigated by a combination of focused methods: capillary viscosimetry, IR spectroscopy, polarized light microscopy, and X-ray diffraction.

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“…The biodegradation of the polymer blend samples was monitored by excavating them from the soil every seven days for a period of four weeks and the degradation was calculated by measuring the weight loss per week using equation 1. This method is commonly known as "degradation by weight loss" (Yang et al, 2006;Dong et al, 2008;Maryam and Hadi, 2016;Mostafa et al, 2018). This procedure was repeated for all the produced samples for this period of time.…”

Section: Biodegradation Analysismentioning

confidence: 99%

Environmental Impact on Biodegradation Speed and Biodegradability of Polyethylene and Zea Mays Starch Blends

Abioye¹,

Oluwadare²,

Abioye³

et al. 2019

J. Ecol. Eng.

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Several studies projected that by year 2025, 4.3 billion urban residents will be generating about 2.2 billion tonnes of municipal solid waste per year, over 10% of which will be plastics. The landfills in Nigeria are uncontrolled and do not conform to the international standards of similar operations elsewhere in the world; this makes the disposal of synthetic polymers in the soil even more hazardous. Due to the availability and relative inexpensiveness of Zea mays in Nigeria, this study explores the use of this natural polymer, blended with low density polyethylene (LDPE) as an alternative to synthetic plastics. Biodegradability of the biopolymer blend was observed while buried in loamy sand soil with properties similar to the soil found in the general area of the study. The results showed that a polymer blend with 50% LDPE (50 CoS) by weight had the most uniform weight loss over the period of the study. Under the soil conditions given in the study, 50 CoS also had the steadiest rate of degradation. Hence 50% LDPE (wt.%) blended with Zea mays starch is the optimal ratio with regard to the degradability of biopolymer in loamy sand soil Ota,

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Characterization and in vitro degradation of poly(octadecanoic anhydride)

Cited by 10 publications

References 37 publications

Biodegradation Studies in Vitro of Novel Poly(adipic anhydride-co-mannitol)-N-maleoyl Chitosan Networks

Biodegradation Studies in Vitro of Novel Poly(adipic anhydride-co-mannitol)-N-maleoyl Chitosan Networks

Oligomers of poly(anhydride): Study of interaction in coating binder

Environmental Impact on Biodegradation Speed and Biodegradability of Polyethylene and Zea Mays Starch Blends

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