Preparation, surface modification and characterisation of solution cast starch PVA blended films

Jayasekara, Ranjith; Harding, Ian H.; Bowater, Ian C.; Christie, Gregor; Lonergan, Greg T.

doi:10.1016/s0142-9418(03)00049-7

Cited by 331 publications

(152 citation statements)

References 13 publications

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“…Previous literature has shown the reinforcement of micro-and nanocellulose in PVA composites for consumer and medical applications [26,42,72,73,86]. However, the agglomeration of nanocellulose could be a limitation to their wider applications.…”

Section: Challenges and Future Aspectsmentioning

confidence: 99%

A Review of Natural Fiber Reinforced Poly(Vinyl Alcohol) Based Composites: Application and Opportunity

et al. 2015

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Natural fibers are fine examples of renewable resources that play an important role in the composites industry, which produces superior strength comparable to synthetic fibers. Poly(vinyl alcohol) (PVA) composites in particular have attracted enormous interest in view of their satisfactory performance, properties and biodegradability. Their performance in many applications such as consumer, biomedical, and agriculture is well defined and promising. This paper reviews the utilization of natural fibers from macro to nanoscale as reinforcement in PVA composites. An overview on the properties, processing methods, biodegradability, and applications of these composites is presented. The advantages arising from chemical and physical modifications of fibers or composites are discussed in terms of improved properties and performance. In addition, proper arrangement of nanocellulose in composites helps to prevent agglomeration and results in a better dispersion. The limitations and challenges of the composites and future works of these bio-composites are also discussed. This review concludes that PVA composites have potential for use in numerous applications. However, issues on technological feasibility, environmental effectiveness, and economic affordability should be considered.

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Section: Challenges and Future Aspectsmentioning

confidence: 99%

A Review of Natural Fiber Reinforced Poly(Vinyl Alcohol) Based Composites: Application and Opportunity

et al. 2015

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“…PVOH contains a large number of hydroxyl groups. According to the principle of surface chemistry, neat PVOH film can be considered a hydrophilic film (Jayasekara et al 2004). In Fig.…”

Section: Water Contact Angle Of the Filmsmentioning

confidence: 99%

Characterization of Cross-linked Alkaline Lignin/Poly (Vinyl Alcohol) Film with a Formaldehyde Cross-linker

Su¹,

Gui-zhen²

2014

BioResources

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On the basis of previous experiments, industrial alkaline lignin/poly (vinyl alcohol) (PVOH) cross-linked films, industrial alkaline lignin/poly (vinyl alcohol) blend films, and neat poly (vinyl alcohol) films were prepared by casting. The films were investigated by Fourier transform infra-red spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetry analysis (TGA), and dynamic mechanical analysis (DMA). The water contact angles for the three kinds of films were studied as well. The crosslinking reaction between alkaline lignin and PVOH was strong, which was attributed to the high hydrolysis degree of PVOH and the high reactivity of formaldehyde. Compared with the neat PVOH film, the crystallinity of the cross-linked film decreased slightly; the thermal stability of the crosslinked film was higher; DMA analysis showed that the Tg and the tanδ magnitude of the alkaline lignin/PVOH reaction film both decreased slightly. Lignin and the cross-linking reaction both improved the water resistance of films. Therefore, this research has provided a detailed analysis of the characterization of the films while exploring the potential of direct usage of industrial alkaline lignin in polymer materials.

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“…This magnified image for mixed particles and MSP shows gaps around each particle, which indicates a lack of interaction and coherence between the powder particles and the polymers, even when the two components appear to be mixed adequately. This phenomenon is attributed to the hydrophobic nature of the MSP's [19], and this influences the general properties of the final product. Figure 7A shows a more homogeneous distribution of the powder inside the SP, with fewer voids shown after hand mixing of both components compared to the silicone infiltrated powder samples ( Figure 6B).…”

Section: Discussionmentioning

confidence: 99%

Investigation of Elastomer Infiltration into 3D Printed Facial Soft Tissue Prostheses

Zardawi¹,

Xiao²,

Noort³

et al. 2015

Anaplastology

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Objectives: 3D colour printing, a method of additive manufacturing, has been developed and utilised to produce facial soft tissue prostheses. This was achieved by layered fabrication of a biocompatible powder held together by an aqueous binder containing a resin and coloured inks, followed by infiltration with a medical grade silicone polymer. The aim of this study was to investigate the elastomer infiltration depths within the 3D printed models.Methods: Three sets of 30 cubes -20x20x20 mm -were used to investigate the infiltration depth of Sil-25 maxillofacial silicone polymer (an MSP) under atmospheric pressure, 2 bar and 3 bar pressure for 5, 10, 15, 20 and 25 min. The investigation was also repeated with two other MSPs -Promax-10 and M-3428 -under 3 bar pressure. Following infiltration, the cubes were bisected, the internal aspects stained with dye, and the infiltration depth measured using a travelling microscope. Infiltration quality was also assessed using scanning electron microscopy (SEM). Results:At standard atmospheric pressure, the maximum infiltration depth of Sil-25 was 1.45 mm after 25 min. However, after 25 min at 2 and 3 bars pressure, the infiltration depth increased to 3.9 mm and 8.7 mm, respectively. At 3 bars the infiltration depth of Promax-10 and M-3428 was 2.4 mm and 7.5 mm, respectively. In all samples SEM revealed a disorganised distribution of starch particles within the MSP infiltrate.Significance: Pressure significantly increased the infiltration rate and depth of the MSPs within 3D printed constructs. The infiltration depth obtained is sufficient for prostheses that are less than 16 mm thick.

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Preparation, surface modification and characterisation of solution cast starch PVA blended films

Cited by 331 publications

References 13 publications

A Review of Natural Fiber Reinforced Poly(Vinyl Alcohol) Based Composites: Application and Opportunity

A Review of Natural Fiber Reinforced Poly(Vinyl Alcohol) Based Composites: Application and Opportunity

Characterization of Cross-linked Alkaline Lignin/Poly (Vinyl Alcohol) Film with a Formaldehyde Cross-linker

Investigation of Elastomer Infiltration into 3D Printed Facial Soft Tissue Prostheses

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