Biodegradable nanocomposite blown films based on poly(lactic acid) containing silver-loaded kaolinite: A route to controlling moisture barrier property and silver ion release with a prediction of extended shelf life of dried longan

Girdthep, Sutinee; Worajittiphon, Patnarin; Molloy, Robert; Lumyong, Saisamorn; Leejarkpai, Thanawadee; Punyodom, Winita

doi:10.1016/j.polymer.2014.10.066

Cited by 52 publications

(42 citation statements)

References 34 publications

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“…This was because of the higher surface‐to‐volume ratio (Conte et al, ). Similar behavior was also reported by other researchers with polymer‐based nanocomposite films regarding the migration of metallic nanoparticles like Ag (Girdthep et al, ), Cu (Conte et al, ), and Ti (Lin et al, ).…”

Section: Resultssupporting

confidence: 87%

Evaluation of PLA nanocomposite films on physicochemical and microbiological properties of refrigerated cottage cheese

Zhang

et al. 2017

J Food Process Preserv

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A novel antimicrobial packaging system was prepared by incorporating TiO 2 or Ag nanoparticles into poly(lactic acid) (PLA) matrix. The effect of PLA, PLA/TiO 2 , and PLA/TiO 2 1 Ag film on the physicochemical and microbiological properties of Yunnan cottage cheese stored at 5 6 1 8C for 25 days was investigated. The low density polyethylene (LDPE) film was used as the control. The weight loss, pH value, lactic acid bacteria count (LAB), texture, sensory quality, and antimicrobial activity were determined. Cheeses packed by PLA/TiO 2 and PLA/TiO 2 1Ag film provided better retention in pH value, LAB, sensory quality, and antimicrobial activity compared with those packed by PLA and LDPE film. Migration of Ti and Ag nanoparticles was lower than the limit of 10 mg/kg as defined by EFSA for food contact materials. The results indicated that the incorporation of TiO 2 or Ag nanoparticles into PLA matrix could maintain cheese quality and prolong its shelf life to 25 days. Practical applicationsYunnan cottage cheese is one of the most popular cheeses in China. However, the shelf life of unpacked Yunnan cottage cheese is only 5-7 days under refrigerated condition. PLA film incorporated with antimicrobial TiO 2 or Ag nanoparticles has great potential to prolong cheese shelf life.The novel packaging material may be an effective alternative for cheese preservation.

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Section: Resultssupporting

confidence: 87%

Evaluation of PLA nanocomposite films on physicochemical and microbiological properties of refrigerated cottage cheese

Zhang

et al. 2017

J Food Process Preserv

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“…It should be also mentioned that alpha and beta transitions were not evidently observed in the present work since the effect of delamination of the fibrous samples during DMA test was probably more pronounced than the contribution of thermo‐mechanical change in segmental mobility. The absence of the alpha and beta peaks was consistent with the previous findings for electrospun samples of poly(vinylidene fluoride)/polypyrrole blend and, particularly, films of PLA/PBAT blends …”

Section: Resultssupporting

confidence: 91%

“…Indeed, improved compatibility between PLA and PBAT might promote ordered arrangement of the polymer segments. In addition, TBT could result in chain scission of the polymers, giving several shorter polymer segments that allow enhanced mobility and resultant ordered molecular rearrangement to form crystallites. Therefore, in the presence of TBT, PLA, and PBAT segments could have higher degree of segment arrangement order.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the volume ratio of the selected binary solvent, the concentration of the PLA/PBAT solution, and the blending weight ratio between PLA and PBAT are demonstrated. Since PLA/PBAT is an immiscible blend, tetrabutyl titanate (TBT) as the polymer compatibilizer was previously incorporated into the blend sheets and films to improve interfacial adhesion. Thus, the influence of the TBT compatibilizer on the morphology of electrospun fibers has also been reported herein, in addition to the analysis of thermal, thermo‐mechanical, and mechanical properties of the mats.…”

Section: Introductionmentioning

confidence: 99%

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Electrospinning polymer blend of PLA and PBAT: Electrospinnability–solubility map and effect of polymer solution parameters toward application as antibiotic‐carrier mats

Khatsee

Daranarong

Punyodom

et al. 2018

J of Applied Polymer Sci

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Electrospinning of a biodegradable polymer blend of poly(lactic acid) (PLA) and poly(butylene adipate‐co‐terephthalate) (PBAT) is reported for the first time. Effects of several solution parameters on electrospinning are explored, including types of single and binary solvents, binary solvent mixing ratio, polymer blend concentration, polymer blending ratio, and loading content of tetrabutyl titanate as a compatibilizer. An electrospinnability–solubility map of the PLA/PBAT blend is firstly developed for the facile selection of a suitable binary solvent system, thus simplifying the laborious, time‐consuming, trial‐and‐error process. A particular binary solvent system derived from good and non‐solvent serves as the most suitable medium for the successful preparation of homogeneous bead‐free electrospun PLA/PBAT nanofibers. It is revealed that the compatibilizer acts not only as a diameter size tuner for the PLA/PBAT fibers but also as a mechanical property enhancer for the immiscible PLA/PBAT electrospun mats. Moreover, the antibacterial activity of the drug‐loaded PLA/PBAT fibrous mats suggests their potential application as antibiotic‐carrier mats. Preparation of the composite mats comprising bead‐free fibers with an average size at sub‐micrometer scale is also demonstrated, additionally promoting the possibility of using the PLA/PBAT‐based electrospun mats as a matrix of various additives for a wide range of applications. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46486.

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“…butoxide 0.01% mol per 500 g lactic acid to PLA powders (Molecular weight = 100,000-150,000 and viscosity = 2.17 ± 0.059 cP) [6,8,9].…”

Section: Preparation Of Poly-l-lactic Acid (Pla)mentioning

confidence: 99%

Effect of forming conditions of poly-lactic acid/hydroxyapatite to tensile strength of canine bone fixation plate using full factorial experimental design

et al. 2018

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Abstract. Problems of using metallic bone fixation plates for canine lead to the idea of the replacement with biocomposite materials. In this research, polylactic acid (PLA) blends with hydroxyapatite (HA) powder 5-15% was used as biocomposite material. The specimens were formed by hot compression molding and the experiment in investigating suitable forming condition was based on the 2 3 full factorials with the center point design of experiment. There are many types of research attempting to develop a prototype of bone fixation plates from a substitute material including forming conditions, in order to obtain the effective bone fixation plate to use. This paper presents the tensile strength for the proposed biocomposite bone fixation plates. After the mechanical testing on various conditions, the tensile strength results ranged from 40 to 60 MPa and it showed that the higher HA ratio had significant effect to the decrease of the tensile strength. This preliminary experiment reveals the tensile strength of forming conditions of PLA/HA composite, which may indicate a direction for improving the better mechanical properties of the bone fixation plates.

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Biodegradable nanocomposite blown films based on poly(lactic acid) containing silver-loaded kaolinite: A route to controlling moisture barrier property and silver ion release with a prediction of extended shelf life of dried longan

Cited by 52 publications

References 34 publications

Evaluation of PLA nanocomposite films on physicochemical and microbiological properties of refrigerated cottage cheese

Evaluation of PLA nanocomposite films on physicochemical and microbiological properties of refrigerated cottage cheese

Electrospinning polymer blend of PLA and PBAT: Electrospinnability–solubility map and effect of polymer solution parameters toward application as antibiotic‐carrier mats

Effect of forming conditions of poly-lactic acid/hydroxyapatite to tensile strength of canine bone fixation plate using full factorial experimental design

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