Biohybrid barrier films from fluidized pectin and nanoclay

Vartiainen, Jari; Tammelin, Tekla; Pere, Jaakko; Tapper, Unto; Harlin, Ali

doi:10.1016/j.carbpol.2010.06.031

Cited by 51 publications

(31 citation statements)

References 31 publications

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“…It is mainly due to the tortuous path caused by nanoclay incorporation and water molecules move through a tortuous path when diffuse across the polymer matrix for MMT. The same behaviour was reported in films based on pectin‐MMT film (Mangiacapra et al ., & Vartiainen et al ., ). Rhim & Wang () also demonstrated that WVP was lower in thermoplastic starch nanocomposite film with clay incorporated.…”

Section: Resultsmentioning

confidence: 97%

Properties of low methoxyl pectin‐carboxymethyl cellulose based on montmorillonite nanocomposite films

Wang

et al. 2014

Int J of Food Sci Tech

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In this study, the low methoxyl pectin-carboxymethyl cellulose-based montmorillonite (LMP-CMC-MMT, LCM) nanocomposite films with nine ratios of LMP:CMC (from 10:0 to 0:10) and different MMT contents (1-8 wt%) were prepared. The mechanical properties, colour, opacity and water vapour permeability (WVP) of composite films were investigated. The maximum of tensile strength (TS) of composite films was 39.85 AE 2.51 MPa at LMP:CMC ratio of 4:6 and 4 wt% MMT (LCM47), which indicated the formation of hydrogen bonds between MMT and LMP-CMC. The reduction of WVP of the LCM47 composite film was 333% of that of the CMC film due to the tortuous path caused by MMT incorporation. LCM composite films had the higher b*-and DE*-values and lower L*-values in comparison with LMP-CMC (LC) composite films. The LCM composite films showed a decrease in transparency as MMT content increased.

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Section: Resultsmentioning

confidence: 97%

Properties of low methoxyl pectin‐carboxymethyl cellulose based on montmorillonite nanocomposite films

Wang

et al. 2014

Int J of Food Sci Tech

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“…Modification of pectin by nanofillers such as montmorillonite or zinc oxide has been also reported 20–22. The formed nanocomposites were characterized by improved elastic modulus, thermal stability as well as gas and water vapor permeability.…”

Section: Introductionmentioning

confidence: 92%

Accelerated weathering of pectin/poly(vinyl alcohol) blends studied by spectroscopic methods

Kaczmarek

̧browska

Vuković-Kwiatkowska

2011

J of Applied Polymer Sci

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The blends of pectin (PEC) and poly(vinyl alcohol) (PVA) at different components ratios were prepared by mixing in water. Thin polymeric films of PEC/ PVA blends and pure polymers were obtained by casting method. All samples were then artificially aged using Suntest apparatus (Atlas) up to 780 h. The changes in chemical structure during sample ageing have been monitored by infrared and ultraviolet-visible absorption spectroscopies. The first stage of weathering (up to $ 300 h) was very slow and alteration of chemical structure was negligible in all samples. Prolonged ageing (>300 h) caused more significant degradation processes. FTIR spectra exhibited the highest changes in hydroxyl and carbonyl band ranges indicating the efficient photooxidation of macromolecules. The mechanisms of the observed processes have been discussed. It was found that PVA undergoes faster photoxidative degradation than pectin aged at the same conditions. The PEC/PVA blends exhibited the improved resistance to weathering comparing with both polymers aged individually. Mutual stabilization effect can be explained by intermolecular interactions between PEC and PVA confirmed by spectroscopic methods.

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“…Nanoparticle layered with the ultrasonic treatment was used for the main purposes since this method is widely used for efficient clay/water suspension preparation [30]. Scanning electron micrograph of the synthesized Rh-B/UB nanopigment is depicted in Fig.…”

Section: Sem Analysismentioning

confidence: 99%