Phase separation structure in poly(vinyl alcohol)/silk fibroin blend films

Tanaka, Toshihisa; Tanigami, Tetsuya; Yamaura, Kazuo

doi:10.1002/(sici)1097-0126(199802)45:2<175::aid-pi883>3.0.co;2-k

Cited by 70 publications

(46 citation statements)

References 1 publication

(1 reference statement)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[23][24][25][26][27][28][29] If no phase separation is observed there are strong interactions between the two polymers and the conformational transition of SF is induced by hydrogen bonding in most cases. [23][24][25] However, when a phase separation occurs, there are no or only weak interactions at the boundary of the two polymers.…”

Section: Resultsmentioning

confidence: 99%

“…Understanding the spinning mechanism of silk may lead us to an advanced technology of fiber spinning, an environmentally friendly and energy-saving process. [1] The least understood feature of the natural spinning process is how silk fibroin (SF) maintains the soluble form (silk I) in the silk gland, even at a high concentration (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30) wt.-%). Since SF has repeat sequences of hydrophobic amino acids with small side-chain groups, such as glycine, alanine and serine, it permits close packing between the molecular chains, and forms a b-sheet structure, known as silk II.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Silk Sericin Retards the Crystallization of Silk Fibroin

Lee

2004

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Summary: The thermal and structural analysis of silk fibroin (SF) and silk sericin (SS) blend films reveals that the crystallization of SF is retarded in the presence of SS. Although a phase separation was observed, there might be a strong interaction at the boundary of the SF and SS through intermolecular hydrogen bonding, which restricts the conformational transition of SF.TEM image of the cross‐section of the SF/SS blend (75:25) film (magnification: ×15 000).imageTEM image of the cross‐section of the SF/SS blend (75:25) film (magnification: ×15 000).

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silk Sericin Retards the Crystallization of Silk Fibroin

Lee

2004

Macromol. Rapid Commun.

View full text Add to dashboard Cite

show abstract

“…Powdered silk fibroin is considered effective as an additive for cosmetic and pharmaceutical preparations because of its moderate moisture absorption and retention properties, and its high affinity for human skin and silk; actually, wool powder also preserve these virtues. Silk powder is one of the useful physical forms of silk fibroin protein, as well as fiber and film, for biomaterial applications [7,8].…”

Section: Introductionmentioning

confidence: 99%

Characterization and functions of Nano-Wool crystallites

Wu¹,

Yan²,

Xu³

et al. 2012

Proceedings of the 2nd International Conference on Electronic and Mechanical Engineering and Information Technology (2012)

View full text Add to dashboard Cite

In the research, we reported on a new method to produce fine wool protein crystallites by regeneration method, and this kind protein emulsion can be used on the treatment of fabrics, synthetic or nature fibers, allowing to form protein sheath or encapsulation layer that do not disturb the original properties and adding additional functions. From the structure analysis, it was showed that the particle size of the protein is below 100nm and micro-morphology being ball-like in appearance. There exists mixed crystalline morphology, single-and multi-crystal , in the nano-wool protein crystallites and it also showed higher crystalline degree (crystallinity) than original wool materials. And, cotton woven fabric treated with this kind nano materials by simply method , exhibits several unique features and after standard washing, these functions still remained .

show abstract

“…However, the blends have their intrinsic shortcomings; for example, an inferior miscibility between the two components, that usually results in unsatisfying properties due to phase separation [11,12]. In this work, aiming at reducing and, furthermore, avoiding the miscibility problem of the materials composed of synthesized polymer and natural-occurring components, a fibroin peptides (FP) mixture, with an average molecular weight 90, obtained from hydrolyzed silk fibroin, was modified by allyl chloride through a nucleophilic substitution reaction, which produced a mixture of fibroin peptides with allyl groups, temporarily named allyl fibroin peptide (AFP).…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of a Fibroin Peptides Derivative with an Allyl Group

Wang

Lü

2009

Designed Monomers and Polymers

View full text Add to dashboard Cite

This paper introduces a new mixture of peptide derivatives, bearing allyl groups, temporarily named allyl fibroin peptide (AFP), fabricated via reaction of low-molecular-weight fibroin peptides (FP) with allyl chloride in a water/ethanol solvent system. The optimal parameters of the preparation were determined through orthogonal analysis experiments. The reaction mechanism was investigated, and the chemical structure of the product was also confirmed using FT-IR and 1 H-NMR analyses. The results indicated that a nucleophilic substitution reaction took place between FP and allyl chloride and the allyl group of the allyl chloride substituted one of the two hydrogen atoms on the amino of peptide molecule; the biggest yield of the product, 58.81 wt%, was obtained with 10 wt% FP, weight ratio of water to ethanol = 3:2 and the molar ratio of NaOH to FP = 1:1. The peptide derivative may be useful in exploiting new functional materials by connecting FP to macromolecules, and imparting new characteristics to the final materials through graft co-polymerization.

show abstract

Phase separation structure in poly(vinyl alcohol)/silk fibroin blend films

Cited by 70 publications

References 1 publication

Silk Sericin Retards the Crystallization of Silk Fibroin

Silk Sericin Retards the Crystallization of Silk Fibroin

Characterization and functions of Nano-Wool crystallites

Preparation and Characterization of a Fibroin Peptides Derivative with an Allyl Group

Contact Info

Product

Resources

About