Investigation on polyacrylonitrile/cellulose acetate blends

Barani, Hossein; Bahrami, S. Hajir

doi:10.1007/bf03218939

Cited by 17 publications

(10 citation statements)

References 10 publications

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“…16 Cellulose acetate (CA) is an industrially important cellulose ester with good mechanical and wetting properties. [17][18][19] It has been a material of choice for various applications ranging from high absorbing diapers to membrane filters. CA nanofibers have been increasingly used in tissue engineering.…”

Section: Introductionmentioning

confidence: 99%

Zein/cellulose acetate hybrid nanofibers: Electrospinning and characterization

et al. 2014

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Protein based scaffolds are preferred for tissue engineering and other biomedical applications owing to their unique properties. Zein, a hydrophobic protein, is a promising natural biodegradable polymer. However, electrospun structures prepared from Zein have poor mechanical and wetting properties. Cellulose acetate (CA) is an economical, biodegradable polymer having good mechanical and water retention properties. The aim of present study was to fabricate a novel material by electrospinning Zein/CA blends. A series of Zein/CA hybrid nanofibers were electrospun and characterized. The attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) spectrum showed the characteristic peaks of both Zein and CA, and was composition dependent. The X-ray photoelectron spectrometry (XPS) curves of Zein/CA blends demonstrated a similar profile to that of pristine Zein nanofibers. Thermogravimetric analyser (TGA) studies confirmed that the Zein/CA hybrid nanofibers have a higher degradation temperature and better thermal stability than pristine Zein nanofibers. The glass transition temperature (T g ) of Zein/CA hybrid nanofibers was also increased in comparison to pure Zein nanofibers as revealed by differential scanning calorimetry (DSC). Zein/CA hybrid nanofibers have hydrophilic surface character as revealed by water contact angle (WCA) analysis. SEM imaging showed bead free morphology of the electrospun nanofibers. The average nanofiber diameter decreased for Zein/CA blends with increasing CA composition. The electrospun Zein/CA hybrid nanofibers may be used for tissue engineering scaffolds and for other biomedical materials.

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Section: Introductionmentioning

confidence: 99%

Zein/cellulose acetate hybrid nanofibers: Electrospinning and characterization

et al. 2014

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“…16,17 Furthermore, cellulose backbone can be grafted onto synthetic polymers to control elasticity, ion exchangeability, thermal stability, and mechanical properties, via 'grafting-from' or 'grafting-onto' way through various polymerization techniques. [18][19][20][21] Several papers have described useful cellulose ether grafting with uniform grafts using various methods. 22 In this study, HPMC resin-fortified poly(EA-co-MMA) particles [HPMC-g-poly(EA-co-MMA) NPs] were prepared by resin-fortified emulsion polymerization using ceric ammonium nitrate (CAN) as a redox initiator in the presence of HPMC.…”

Section: Introductionmentioning

confidence: 99%

Hydroxypropyl methylcellulose-graft-poly(ethyl acrylate-co-methyl methacrylate) particles by resin-fortified emulsion polymerization

et al. 2010

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This article describes the preparation and characterization of hydroxypropyl methylcellulose-graftpoly(ethylacrylate-co-methyl methacrylate) particles [HPMC-g-poly(EA-co-MMA) NPs]. The particles were prepared by resin-fortified emulsion polymerization using ceric ammonium nitrate (CAN). In this study, a series of HPMC-g-poly(EA-co-MMA) NPs were synthesized by varying the CAN : HPMC and HPMC : (EA/MMA) ratios to determine the effects of these variables on the physical properties of HPMC-g-poly(EA-co-MMA) as well as the dissolution behavior of an aspirin tablet, as a model drug. The drug dissolution profiles of the coated tablets were affected significantly by the HPMC : (EA/MMA) molar ratio.

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“…Thus, a thorough investigation of interaction parameters that govern the morphology of blend hollow fiber membranes is urgently needed. Viscometric measurements provide an easier analysis of polymeric blend systems . Such measurements yield interaction parameters used to predict morphological variations in flat sheet as well as hollow fiber membranes .…”

Section: Introductionmentioning

confidence: 99%

Solvent effect and macrovoid formation in cellulose acetate phthalate (CAP)–polyacrylonitrile (PAN) blend hollow fiber membranes

Roy

Bhunia

2016

J of Applied Polymer Sci

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The interactions which govern the morphology of blend hollow fiber membranes is explored in detail in the present work. A hydrophilic (cellulose acetate phthalate) and a relatively hydrophobic polymer (polyacrylonitrile, critical surface tension 47.0 mJ/m 2 ) blend in three solvents, viz., n-methylpyrrolidone (NMP), dimethyl formamide (DMF), and dimethylsulfoxide (DMSO), has been selected as an example to understand the polymeric blend-solvent and nonsolvent interactions. The deviation intrinsic parameter (D h ½ ) is estimated as well as cloud point, linearized cloud point (LCP), and Fourier transform-infrared (FT-IR) analysis have been performed for the blend membranes. The analysis yields that D h ½ is negative for both DMF and NMP indicating miscibility, whereas for DMSO it is positive indicating immiscibility. Cloud point and LCP analysis too reveal DMSO to be the poorest solvent and liquid-liquid demixing is the governing phenomenon for the phase inversion. In depth interaction is conducted with help of FT-IR spectra. The higher red shift of >C@O (1747 to 1665 cm 21 ) after complete phase inversion indicates stronger interaction in DMF and NMP, whereas, no shift in >C@O stretching in DMSO indicates weak or no interaction. This reveals that polymer blend-solvent interaction is weak in case of DMSO than DMF or NMP. These observations manifest in DMSO membranes being most porous, with highest permeability and molecular weight cut off with poor tensile strength. On the other hand, NMP and DMF hollow fiber membranes yields denser structure with better mechanical properties.

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Investigation on polyacrylonitrile/cellulose acetate blends

Cited by 17 publications

References 10 publications

Zein/cellulose acetate hybrid nanofibers: Electrospinning and characterization

Zein/cellulose acetate hybrid nanofibers: Electrospinning and characterization

Hydroxypropyl methylcellulose-graft-poly(ethyl acrylate-co-methyl methacrylate) particles by resin-fortified emulsion polymerization

Solvent effect and macrovoid formation in cellulose acetate phthalate (CAP)–polyacrylonitrile (PAN) blend hollow fiber membranes

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