Surface photo-crosslinking of plasticized thermoplastic starch films

Niazi, Muhammad Bilal Khan; Broekhuis, Antonius

doi:10.1016/j.eurpolymj.2015.01.027

Cited by 47 publications

(35 citation statements)

References 33 publications

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“…The addition of the nanofillers led to modifications in the positions of the bands located in the fingerprint region of the nanocomposite mulch films as compared to their analogous without nanofiller. This was observed using both starch matrices: native and oxidized, thus suggesting the existence of carbohydrate polymer matrix‐nanofiller interactions …”

Section: Resultsmentioning

confidence: 65%

“…The carboxyl groups tend to react with the hydroxyl groups, giving rise to the formation of esters. Figure shows the appearance of a peak at 1740 cm −1 due to the frequency of stretching vibration of the carbonyl group of the esters . The addition of the nanofillers led to modifications in the positions of the bands located in the fingerprint region of the nanocomposite mulch films as compared to their analogous without nanofiller.…”

Section: Resultsmentioning

confidence: 98%

“…The bands centered at 2929 and 2886 cm −1 are assigned to the antisymmetric and symmetric stretching vibration of the C–H bonds, while the bands localized at 1646.9 and 1365 cm −1 correspond to the bending frequency of the O–H groups in the water bound to the matrix and C–H in CH 2 groups, respectively . The bands at 1149 and 1080 cm −1 are related to the stretching frequencies of the C–O bonds in C–OH groups, and the band at 1008 cm −1 correspond to the vibration of the C–O bonds in C–OC groups …”

Section: Resultsmentioning

confidence: 99%

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Structural and Thermal Properties of Agricultural Mulch Films Based on Native and Oxidized Corn Starch Nanocomposites

2019

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The current need to put an end to the accumulation of synthetic polymer waste during the cultivation and harvest of food has promoted scientific research for the development of biodegradable agricultural mulch films. Native and oxidized thermoplastic corn starch, with and without the addition of natural and modified bentonite (Bent) with an eco‐friendly natural polymer such as chitosan (CS) are proposed as an alternative for this field. The hydrogen‐bonding interactions affecting the structural and thermal properties of the designed films are followed and analyzed by Fourier transform infrared spectroscopy (FTIR), X‐ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and rheometry. Results indicate that chemical modification carried out onto starch's structure leads to a reduction in the OH polar groups, which affects their films interaction with nano‐clays and glycerol. Besides, nanocomposites which present an intercalated structure demonstrate less effective intercalation when oxidized starch is used as the matrix. Additionally, a higher degree of crystallinity is observed, which could indicate a lower degree of compatibility between polymer and plasticizer. Thermal characterization confirms that the glass transition temperature of plasticized corn starch increases when oxidation is performed due to the decreased compatibility between the plasticizer agent and the oxidized corn starch.

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

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Structural and Thermal Properties of Agricultural Mulch Films Based on Native and Oxidized Corn Starch Nanocomposites

2019

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“…Recent studies have focused on the use of nano‐composites for the development of new types of active packaging (Bradley and others ; Silvestre and others ; Busolo and Lagaron ). Niazi and Broekhuis () reduced recrystallization or onset of retrogradation of starch by using a natural plasticizer (malic acid) and reported that the reduction in retrogradation correlated with high moisture absorption. It is pertinent to mention that the rate of retrogradation depends on the concentration of the hygroscopic plasticizer used.…”

Section: Use Of Additives For Starch Modificationsmentioning

confidence: 99%

“…Edible films and coatings have attracted attention because they address various key functions, such as extending maturity and senescence periods, and reducing microbial growth, thereby assuring postharvest quality of perishable foods (Jimenez and others ). Various bio‐based packaging materials can be employed for short shelf‐life applications and for dry products that do not require a high oxygen and/or water vapor barrier (Niazi and Broekhuis ). The environment‐friendly nature of biopolymers (starch, proteins, polysaccharides, and lipids) with excellent keeping quality as well as safety records adds value to edible films and coatings (Pierro and others , ; Tanese and others ; Mihindukulasuriya and Lim ).…”

Section: Introductionmentioning

confidence: 99%

Art and Science behind Modified Starch Edible Films and Coatings: A Review

Shah

Naqash

Gani

et al. 2016

Comp Rev Food Sci Food Safe

197

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Technological advances have led to increased constraints regarding food packaging, mainly due to environmental issues, consumer health concerns, and economic restrictions associated therewith. Hence, food scientists and technologists are now more focused on developing biopolymer packages. Starch satisfies all the principal aspects making it a promising raw material for edible coatings/films. Modified starch has grabbed much attention, both at the academic as well as at the industrial level, because these films exhibit dramatic improvement in filming properties without involving any significant increase in cost of production. Various methods, additives used, and recent advances in the field of starch film production are discussed in detail in this review, which also provides an overview of the available information along with recent advances in modified starch film packaging.

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Facile Fabrication of Starch‐Based UV Barrier Films with Remolding Ability and Reinforcement for Water Resistance

Shibasaki,

Hsu,

Uyama

2024

Macro Materials & Eng

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Petroleum‐derived plastics are harmful to ecosystems because they are not decomposed in the natural environment. Therefore, the replacement of petroleum‐derived plastics with biodegradable plastics has attracted considerable attention. UV‐barrier films in the agricultural and packaging fields are mainly composed of petroleum‐derived plastics, which have a negative impact on the ecosystem when they leak into the environment. Thermoplastic starch (TPS) is an inexpensive and sustainable biodegradable plastic that has recently attracted considerable attention. In this study, the addition of UV barrier properties and remolding ability to TPS for replacing petroleum‐derived UV barrier films are investigated. Also, a biodegradable polyester coating is studied to improve the water resistance of the prepared UV‐barrier TPS (U‐TPS). To prepare U‐TPS, a conjugated enamine structure is formed by reacting starch acetoacetate with diamine monomers during melt kneading. U‐TPS exhibits high UV barrier properties across the UV regions (200–400 nm) owing to the presence of acetoacetyl groups and enamines. These results indicate the possibility of increasing the utilization of TPS in agriculture and as a packaging material.

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Surface photo-crosslinking of plasticized thermoplastic starch films

Cited by 47 publications

References 33 publications

Structural and Thermal Properties of Agricultural Mulch Films Based on Native and Oxidized Corn Starch Nanocomposites

Structural and Thermal Properties of Agricultural Mulch Films Based on Native and Oxidized Corn Starch Nanocomposites

Art and Science behind Modified Starch Edible Films and Coatings: A Review

Facile Fabrication of Starch‐Based UV Barrier Films with Remolding Ability and Reinforcement for Water Resistance

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