An effective method for delayed migration of dripping agent from linear low‐density polyethylene films

Yang, Siqi; Zhu, Dantong; Yang, Fanghong; Li, Weihua; Yao, Zhanhai; Liu, Bingwei

doi:10.1002/pat.5192

Cited by 3 publications

(4 citation statements)

References 38 publications

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“…The L1 film had a 38° contact angle, which was smaller than that of the L0 film. The addition of GMS significantly reduced the contact angle of the LLDPE film due to the strong hydrophilicity of the −OH groups of GMS . In addition, according to Wenzel’s correction to Young’s equation, the surface was hydrophilic if the contact angle was less than 90°.…”

Section: Resultsmentioning

confidence: 99%

“…The addition of GMS significantly reduced the contact angle of the LLDPE film due to the strong hydrophilicity of the −OH groups of GMS. 48 In addition, according to Wenzel's correction to Young's equation, the surface was hydrophilic if the contact angle was less than 90°. At this time, the increase of film surface roughness will enhance the resistance caused by the multistage gradient diffusion of water droplets, it could reduce the contact angle with the film, and the surface was more hydrophilic.…”

Section: Adsorption Mechanismmentioning

confidence: 99%

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Adsorption Properties of Diatomite Minerals on Glyceryl Monostearate for Antifogging of the Plastic Film

Zha,

Zhang,

Ren

et al. 2024

ACS Omega

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Adding an appropriate amount and the stable precipitation of surfactant on the inner surface of agricultural plastic greenhouse films can prevent the formation of water droplets on the inner surface of the film to reduce its harmful effects in the process of plant cultivation and production. In this work, for the stable precipitation of the surfactant glycerol monostearate, diatomite minerals from three origins in China were compared through structural analysis and adsorption performance. The effects of acid treatments and alkali treatments on the mineral structure were studied, and the adsorption mechanism of glycerol monostearate was further investigated. The results show that the structural characteristics of Jilin diatomite are more suitable as adsorbents for glyceryl monostearate adsorption. Because diatomite is resistant to acids but not alkalis, when diatomite is treated with an alkali, impurities on its surface can be removed and the hydroxyl group and specific surface area can be greatly increased. The adsorption capacity of glycerol stearate was increased to 218.4 mg/g, or 32.08%, over its pretreatment level. The results show that this is mainly the result of physical adsorption caused by van der Waals force imbalance and chemisorption caused by a small number of hydrogen bonds. In addition, the dripping performance of this composite dripping film with mineral diatomite was better than that of the commercial dripping film, which provided a theoretical basis for efficient mineral slow-release drip irrigation composite film.

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Section: Resultsmentioning

confidence: 99%

Section: Adsorption Mechanismmentioning

confidence: 99%

Adsorption Properties of Diatomite Minerals on Glyceryl Monostearate for Antifogging of the Plastic Film

Zha,

Zhang,

Ren

et al. 2024

ACS Omega

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“…16 At present, there are many ways to delay the migration of antifogging agents in polyethylene films. Yang et al 17 have grafted a reactive-type antifogging agent C18 alkyl diethanolamine acrylic monoester (EDM) onto layered double hydroxide (LDH). Accelerated dripping experiments at 60 °C have shown that the dripping duration of the LLDPE/ LDH-g-EDM film is up to 18 days with 2 wt % EDM and 0.6 wt % LDH, which is 7 days longer than that of a control LLDPE/LDH film.…”

Section: Introductionmentioning

confidence: 99%

“…At present, there are many ways to delay the migration of antifogging agents in polyethylene films. Yang et al . have grafted a reactive-type antifogging agent C18 alkyl diethanolamine acrylic monoester (EDM) onto layered double hydroxide (LDH).…”

Section: Introductionmentioning

confidence: 99%

A Facile Method for Delaying the Migration of Antifogging Agents in Polyethylene Films

Chen

Wang

et al. 2022

Ind. Eng. Chem. Res.

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Antifog polyethylene (PE) films are widely used as covers for greenhouse structures because they can eliminate the multiple adverse effects of the fogging phenomenon. Herein, we propose a way to enhance the shelf life of antifog PE films by delaying the migration of antifogging agents using polymer microspheres. Cross-linked poly(maleic anhydride-styrene-divinylbenzene) microspheres (PMSD) were prepared by self-stabilized precipitation polymerization (2SP) and then converted into PMSD grafted with methoxy polyethylene glycol (mPEG) of different chain lengths (PMSD-g-mPEG). PMSD-g-mPEG microspheres were incorporated into PE films with an antifogging agent, and the properties of the prepared antifog PE films were investigated in detail. Scanning electron microscopy displayed the good dispersion state of PMSD-g-mPEG at low loadings and its positive correlation with mPEG chain length. Accelerated dripping experiments and contact angle tests showed that PMSD-g-mPEG2000 microspheres can exert the best effect in delaying the migration of antifogging agents, giving rise to a 36% improvement in dripping duration under optimized conditions. In addition, PMSD-g-mPEG2000 microspheres do not affect the optical, mechanical, and thermal properties of antifog PE films obviously.

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Supramolecular Lock-Shell Layer Nanocapsules Enabling Polyethylene with Long-Term Antifogging Ability

Kang,

Lin,

Wan

et al. 2024

ACS Appl. Polym. Mater.

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Antifogging packaging is crucial for prolonging the shelf life of products in the fields of food, vegetable, and fruit preservation. To date, obtaining antifogging films with the merits of ease of preparation, facilitation of large-scale industrialization, and outstanding reliability through common thermoplasticization methods like film blowing is challenging. Herein, we develop a facile method to prepare hydrophilic core−shell nanocapsules with a particle size less than 200 nm, which are composed of the inner amphiphilic Span-80 molecules acting as main antifogging units and the outer cross-linked copolymeric networks as supramolecular lock-shell layers and supplementary antifogging units to prevent the rapid migration of Span-80 from the hydrophobic polyethylene (PE) host. Long-term antifogging PE films composed of PE pellets and different contents of the prepared hydrophilic nanocapsules are directly obtained by using the most industrialized film blowing technique. Chemical structure, optical, mechanical, thermal, and antifogging performances of the produced antifogging films are evaluated. The results reveal that the synthesized nanocapsules with the supramolecular lock-shell layer show outstanding storage stability, form stability, hydrophilicity, and thermal stability. PE films with the content of the encapsulated Span-80 nanocapsules of about 1.6 per hundred rate can exhibit excellent hydrophilicity. The practical antifogging effect of the produced nanocapsule-doped PE films reveals that the film can still show remarkable antifogging ability even after experiencing various harsh conditions such as friction, water washing, and long-term storage and that the film can effectively prolong the shelf time of common vegetable and fruit. The strategy of the fabricated antifogging PE films probably opens a new avenue to develop the next generation of long-term antifogging packaging films.

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An effective method for delayed migration of dripping agent from linear low‐density polyethylene films

Cited by 3 publications

References 38 publications

Adsorption Properties of Diatomite Minerals on Glyceryl Monostearate for Antifogging of the Plastic Film

Adsorption Properties of Diatomite Minerals on Glyceryl Monostearate for Antifogging of the Plastic Film

A Facile Method for Delaying the Migration of Antifogging Agents in Polyethylene Films

Supramolecular Lock-Shell Layer Nanocapsules Enabling Polyethylene with Long-Term Antifogging Ability

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