Macromol. Biosci. 2/2017

Wu, Xiaowen; Muthusubramanian, Shanmugam; VanOosten, Sarah Kay; Wisdom, Cate; Tamerler, Candan; Edirisinghe, Mohan

doi:10.1002/mabi.201770005

Cited by 4 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Free amorphous PCL chains can be delocalized during acetone vapor treatment and then crystalized onto the pre‐existing crystalline lamellae upon solvent evaporation, giving rise to hierarchically nanostructured PCL fibers. The SVA method used in our previous study is simple yet efficient, and it paves a new way to introduce structural hierarchy to fiber materials prepared using various modern fiber fabrication techniques . More significantly, the solvent vapor selected, also a nonsolvent for the fibers, can easily pass through the air trapped in the porous mat.…”

Section: Introductionmentioning

confidence: 98%

Hierarchical Polymer Blend Fibers of High Structural Regularity Prepared by Facile Solvent Vapor Annealing Treatment

Bauer

Grim

2017

Macro Materials & Eng

View full text Add to dashboard Cite

In this study, a facile solvent vapor annealing (SVA) method is utilized to inscribe hierarchical secondary nanostructures onto electrospun poly(ε‐caprolactone)(PCL)/poly(ethylene oxide) (PEO) blend fibers. By carefully understanding the phase separation and crystallization behavior of PCL/PEO blends during the electrospinning process, one can tune the spatial distribution of the PCL phase, the growth of the PCL crystalline regions, and therefore the amount and even the sensitivity of free amorphous PCL chains in response to acetone vapor. Here, the PEO domains serve as mini‐dividers to restrict the growth of the semicrystalline PCL phase. During acetone vapor annealing, the PEO phase remains largely unchanged while swollen‐free amorphous PCL chains are deposited on pre‐existing PCL or even PEO crystalline lamellae, giving rise to hierarchical structures of high regularity. The morphologies of PCL/PEO hierarchical structures reported in this study are of striking uniformity, further demonstrating the reliability of the facile SVA method, not only for a few layers of thin fiber mats but also for thicker fiber mats.

show abstract

Section: Introductionmentioning

confidence: 98%

Hierarchical Polymer Blend Fibers of High Structural Regularity Prepared by Facile Solvent Vapor Annealing Treatment

Bauer

Grim

2017

Macro Materials & Eng

View full text Add to dashboard Cite

show abstract

“…Poly(vinyl alcohol) (PVA) is a water-soluble, biocompatible, and degradable polymer, and it has been applied in a variety of fields. [10][11][12] For its excellent film-forming ability, PVA has been widely used in film industrial production and scientific research. There are massive hydroxyl groups on the main chain of PVA.…”

Section: Introductionmentioning

confidence: 99%

Effect of copper sulfate pentahydrate on the structure and properties of poly(vinyl alcohol)/graphene oxide composite films

Liu

Xiang

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

Poly(vinyl alcohol) (PVA)/graphene oxide (GO)/copper sulfate pentahydrate (CuSO4·5H2O) composite films were prepared by the solution casting method, and the effect of CuSO4·5H2O on the structure and properties of the PVA/GO composites was investigated. Fourier transform infrared (FTIR) analysis proved the crosslinking interaction between CuSO4·5H2O and the OH group of PVA. The crystallinity of the composite films increased first and then decreased. For the composite films, the tensile strength, Young's modulus, and yield stress values improved with increasing CuSO4·5H2O, whereas the elongation at break decreased compared with that of the neat PVA/GO composite film. The thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG) patterns of the PVA/GO/CuSO4·5H2O composite films showed that the thermal stability decreased; this was consistent with the TGA–FTIR analysis. A remarkable improvement in the oxygen‐barrier properties was achieved. The oxygen permeability coefficient was reduced by 60% compared to that of the neat PVA/GO composite film. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44135.

show abstract

“…Therefore, compatibilizer agents are essentials to obtain TPS/PLA blends with desired properties. These include polyethylene glycol grafted starch (MPEG‐ g‐ St), 3 ethylene‐vinyl acetate‐glycidyl methacrylate, 13 PLA functionalized with maleic anhydride (PLA‐ g ‐MA), 14 PLA functionalized with acrylic acid (PLA‐ g ‐AA), 15 maleinized linseed oil (MLO), 16 and epoxidized sesame oil 8 . Furthermore, in situ‐compatibilization methods that employ compatibilizer agents such as peroxides, 17 MA, 18,19 and glycidyl metacrylate 12 have also been used.…”

Section: Introductionmentioning

confidence: 99%

An approach for the compatibility of thermoplastic starch/poly (lactic acid) blends using an ester obtained from glycerol and tall oil fatty acids

Murillo

Ararat

2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

This work reports the compatibilization of thermoplastic starch (TPS)/polylactic acid (PLA) blends with a glycerol ester (GE), obtained by modifying glycerol with tall oil fatty acids. The proportions of TPS/PLA studied were 50/50 and 70/30, with the GE amounts from 0 (control sample), 5, 10, 15, and 20 wt%. The effect of the compatibilizer on the structural, thermal, rheological, morphological, mechanical and biodegradation properties of the blends was evaluated. Ultraviolet visible (UV–Vis) analysis of the blends showed that GE improved the light transmission resistance of the materials. The presence of GE resulted in decreased glass transition temperature (Tg) and complex viscosity (η*) values for the blends as opposed to the control sample. Furthermore, η* decreased with the increase in GE content and the η* values were lower than 105 Pa.s. Scanning electronic microscopy analysis revealed that GE improved the interfacial adhesion between TPS and PLA. The tensile modulus (149–414 MPa), tensile strength (5.60–11.6 MPa) and the biodegradability of the blends decreased with GE content, but the water resistance showed an opposite behavior. The GE acted as a plasticizer, compatibilizer and antioxidant for TPS/PLA blends.

show abstract

Macromol. Biosci. 2/2017

Cited by 4 publications

References 0 publications

Hierarchical Polymer Blend Fibers of High Structural Regularity Prepared by Facile Solvent Vapor Annealing Treatment

Hierarchical Polymer Blend Fibers of High Structural Regularity Prepared by Facile Solvent Vapor Annealing Treatment

Effect of copper sulfate pentahydrate on the structure and properties of poly(vinyl alcohol)/graphene oxide composite films

An approach for the compatibility of thermoplastic starch/poly (lactic acid) blends using an ester obtained from glycerol and tall oil fatty acids

Contact Info

Product

Resources

About