Thermophysical properties of polycaprolactone/chitosan blend membranes

Wan, Ying; Lü, Xiaoling; Dalai, Siqin; Zhang, Jun

doi:10.1016/j.tca.2009.01.007

Cited by 83 publications

(52 citation statements)

References 24 publications

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“…The peak at 300 °C is related to keratin, specifically with the destruction of disulfide bonds and the denaturation of the helix structure [17]. Also it could be ascribed to total biopolymer decomposition [15,33]. These results show a decomposition temperature for ChS-SB composites around 290-330 °C, a temperature range that agrees with the highest weight loss observed in TGA.…”

Section: Thermogravimetrical Analysissupporting

confidence: 60%

“…The thermal behavior observed for these composites can be described in three main steps: the first mass loss (7%) from 30-135 °C is due to the loss of bound-water. The second step is from 220-360 °C, with mass decreasing from 8%-76%, this is associated with a complex process that includes dehydration of the saccharide rings, depolymerization and decomposition of the chitosan units [15,33]. The third step occurred from 450-600 °C with the greatest weight loss corresponding to complete degradation of the polymer [6,15,33].…”

Section: Thermogravimetrical Analysismentioning

confidence: 99%

“…The second step is from 220-360 °C, with mass decreasing from 8%-76%, this is associated with a complex process that includes dehydration of the saccharide rings, depolymerization and decomposition of the chitosan units [15,33]. The third step occurred from 450-600 °C with the greatest weight loss corresponding to complete degradation of the polymer [6,15,33]. The thermal behavior of the composites does not change significantly when keratin biofibers are included as reinforcement, the behavior of the thermal decomposition remains almost unaltered for all the composites when compared to the chitosan-starch curve (ChS).…”

Section: Thermogravimetrical Analysismentioning

confidence: 99%

“…TGA curves of the composites chitosan-starch/ground quill (ChS-GQ) are shown in Figure 9. The initial weight loss (7%) occurs from 40-150 °C and is caused by evaporation of water, while the second range (200-360 °C) with a weight loss of 10%-75% corresponds to a complex process including the dehydration of the saccharide rings, depolymerization, and decomposition of acetylated and deacetylated units of chitosan [6,15,33]. Also, this stage is associated with the destruction of disulfide bonds and the elimination of H 2 S originating from amino acid cysteine in keratin [17,34].…”

Section: Thermogravimetrical Analysismentioning

confidence: 99%

“…The initial endothermic peak is approximately at 90-100 °C, associated with loss of water. The second range, around 200 °C, corresponds to the crystalline melting temperature of keratin, whereas the third range from 290-330 °C can be assigned to thermal changes in chitosan, such as dehydration of saccharide rings, decomposition of acetylated and deacetylated units, and also to thermal degradation of keratin with disruption of disulfide bonds and denaturation of helical structures [15,17,33]. As is observed for all composite DSC curves, thermal behavior is affected by keratin fibers and quill presence, since keratin undergoes different reactions caused by the thermally sensitive behavior of amino acids.…”

Section: Thermogravimetrical Analysismentioning

confidence: 99%

See 4 more Smart Citations

All Green Composites from Fully Renewable Biopolymers: Chitosan-Starch Reinforced with Keratin from Feathers

et al. 2014

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Abstract:The performance as reinforcement of a fibrillar protein such as feather keratin fiber over a biopolymeric matrix composed of polysaccharides was evaluated in this paper. Three different kinds of keratin reinforcement were used: short and long biofibers and rachis particles. These were added separately at 5, 10, 15 and 20 wt% to the chitosan-starch matrix and the composites were processed by a casting/solvent evaporation method. The morphological characteristics, mechanical and thermal properties of the matrix and composites were studied by scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry and dynamic mechanical analysis. The thermal results indicated that the addition of keratin enhanced the thermal stability of the composites compared to pure matrix. This was corroborated with dynamic mechanical analysis as the results revealed that the storage modulus of the composites increased with respect to the pure matrix. The morphology, evaluated by scanning electron microscopy, indicated a uniform dispersion of keratin in the chitosan-starch matrix as a result of good compatibility between these biopolymers, also corroborated by FTIR. These results demonstrate that chicken feathers can be useful to obtain novel keratin reinforcements and develop new green composites providing better properties, than the original biopolymer matrix.

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Section: Thermogravimetrical Analysissupporting

confidence: 60%

Section: Thermogravimetrical Analysismentioning

confidence: 99%

Section: Thermogravimetrical Analysismentioning

confidence: 99%

Section: Thermogravimetrical Analysismentioning

confidence: 99%

Section: Thermogravimetrical Analysismentioning

confidence: 99%

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All Green Composites from Fully Renewable Biopolymers: Chitosan-Starch Reinforced with Keratin from Feathers

et al. 2014

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Polycaprolactone: Synthesis, Properties, and Applications

Guarino

Gentile

Sorrentino

et al. 2017

Encyclopedia of Polymer Science and Technology

114

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Polycaprolactone (PCL) is one of the earliest, commercially available, synthetic polymers characterized by a large set of biodegradation and mechanical properties that can be finely controlled by regulating the local environmental driving forces (ie, microorganisms, enzymes, hydrolysis). Owing to their faster resorbability and long‐term degradation in the presence of water (up to 3 to 4 years), PCL has been widely investigated as a bioinspired material able to target selective cell response via controlled intracellular resorption pathways. In comparison with other aliphatic polyesters, the superior rheological and viscoelastic properties render PCL easy to manufacture and manipulate into a wide range of three‐dimensional platforms (ie, porous scaffold, micro‐ and nanocarriers, and implantable devices). In this article, we discuss the main relationships between polymer synthesis, physical/chemical properties, and processing conditions to optimize the fabrication of biodegradable devices made of PCL, putting particular focus on drug delivery, tissue engineering. and green chemistry applications.

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Biomimetic Polymers forIn VivoDrug Delivery

Wang¹,

Park²

2014

Bioinspired and Biomimetic Polymer Systems for Drug and Gene Delivery

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Thermophysical properties of polycaprolactone/chitosan blend membranes

Cited by 83 publications

References 24 publications

All Green Composites from Fully Renewable Biopolymers: Chitosan-Starch Reinforced with Keratin from Feathers

All Green Composites from Fully Renewable Biopolymers: Chitosan-Starch Reinforced with Keratin from Feathers

Polycaprolactone: Synthesis, Properties, and Applications

Biomimetic Polymers forIn VivoDrug Delivery

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