Studies on Semi-crystalline Poly Lactic Acid (PLA) as a Hydrophobic Coating Material on Kraft Paper for Imparting Barrier Properties in Coated Abrasive Applications

Sundar, N.; Kumar, S. Ananda; Pavithra, A; Ghosh, Satyabrata

doi:10.1016/j.porgcoat.2020.105682

Cited by 33 publications

(12 citation statements)

References 15 publications

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“…Figure 13a shows that an addition of 1% p-SB into the PLA matrix did not even decrease the smoothness of PLA paper coating. But on increasing the p-SB concentration, surface roughness changes due to particles agglomeration occurred on the Kraft paper's surface [26].…”

Section: Surface Roughnessmentioning

confidence: 98%

Design and development of Schiff’s base (SB)-modified polylactic acid (PLA) antimicrobial film for packaging applications

2021

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Graphic abstract SB compounds were synthesized from (para, ortho, meta)-phenylenediamine as a cross-linking agent through vanillin. The chemical structure of the formed SB complexes is confirmed by FT-IR spectroscopy. Among the three complexes, para-phenylenediamine (p-SB), possessing a stable resonance structure with the lowest steric repulsion, was obtained in the highest yield of 87%. Hence, the present work focused on reducing the brittle behavior and improving the antimicrobial activity of PLA by reacting it with p-SB. FT-IR investigation revealed the existence of an intermolecular hydrogen bonding between PLA and SB, which led to an increased toughness in the PLAp-SB complex. This is further confirmed through SEM analysis. The tensile and contact angle measurements determined an improvement in mechanical properties and hydrophobic nature of the PLAp-SB film. DSC results demonstrated an increase in flexibility, which indicated a 10C reduction in glass transition temperature ( T g ) of PLAp-SB films. The antimicrobial activity of the PLAp-SB films had a maximum of 15mm zone of inhibition, which was found to be more effective than the neat PLA film. PLAp-SB coating on Kraft paper showed improved mechanical and barrier properties than neat PLA coatings and could be tried as a possible replacement for conventional synthetic packaging materials.

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Section: Surface Roughnessmentioning

confidence: 98%

Design and development of Schiff’s base (SB)-modified polylactic acid (PLA) antimicrobial film for packaging applications

2021

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“…Besides being nonwetting with high CA and low CAH values, hybrid paper sheets should also possess barrier properties against water and air for being considered as potential candidates for packaging materials [33][34][35][36][37]. In literature, the resistancy of these materials towards various environmental factors like gases, temperature, moisture, or grease is frequently reported [33][34][35][36][37]. But, the resistancy against water and air are the two most crucial factors in determining the barrier performance of a paper based material [34][35][36].…”

Section: Barrier Propertiesmentioning

confidence: 99%

“…In literature, the resistancy of these materials towards various environmental factors like gases, temperature, moisture, or grease is frequently reported [33][34][35][36][37]. But, the resistancy against water and air are the two most crucial factors in determining the barrier performance of a paper based material [34][35][36]. Usually, a polymeric composite coating is applied onto the paper or paperboard sustrate to achieve the desired barrier properties [33,34,37].…”

Section: Barrier Propertiesmentioning

confidence: 99%

“…But, the resistancy against water and air are the two most crucial factors in determining the barrier performance of a paper based material [34][35][36]. Usually, a polymeric composite coating is applied onto the paper or paperboard sustrate to achieve the desired barrier properties [33,34,37]. To get an idea about the barrier performances of the hybrid paper sheets, their air permeance, Bendtsen roughness and water absorption values were measured in accordance with the globally accepted Tappi standards.…”

Section: Barrier Propertiesmentioning

confidence: 99%

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Hybrid paper sheets with improved barrier properties

Söz

2021

Turk J Chem

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Hybrid paper sheets were prepared by applying a thin coating layer of cross-linked polydimethylsiloxane (PDMS) and inorganic particles onto Whatman Grade 1 filter paper substrates. Several coatings with different inorganic particle contents and types were applied onto the paper substrates to investigate the effect of the variation in the coating formulation on the (i) wetting, (ii) water barrier properties, (iii) air barrier properties, (iv) surface roughness, and (v) mechanical properties of the samples. It was revealed that the superhydrophobic hybrid paper sheets with significantly low air permeability and high water barrier properties could be prepared which is an indication that the method proposed can be used for the preparation of packaging materials.

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“…Oleophobic materials have contact angle greater than 90°, and often are prepared by physical and chemical methods (Shiraki and Yokoyama 2020). The physical method is inspired by the "lotus leaf effect", and researchers try to recreate a regular, rough structure on the surface of the substrate by adding nano-fillers (Wang et al 2014), preparing ordered porous structures (Zhang et al 2015), and using composite paper support materials (Sundar et al 2020). When an oleophobic materials comes in contact with grease, a layer of air is formed under the oil droplet due to the rough surface structure.…”

Section: Introductionmentioning

confidence: 99%

Improved Oil Resistance of Cellulose Packaging Paper by Coating with Natural Polymer Derived Materials

Wang¹,

Wang²,

Zhang³

et al. 2021

Preprint

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Paper is widely used as food packaging due to its good mechanical strength and degradability. However, it has a relatively strong affinity for water and oil, which limits its application scope. In this work, we prepare two types of coated paper to investigate, the influence the air permeability and polarity on the oil resistance of the coated paper. The results showed that reducing the air permeability improved the grease resistance of the coated paper. High surface energy coatings also showed better oil resistance because of their higher content of polar components that resulted in a higher resistance to grease. The mechanical properties of the paper also improved after applying the coating. These natural derived materials offer an alternative to the fluoride-containing materials currently used in the market to improve the wettability of paper.

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Studies on Semi-crystalline Poly Lactic Acid (PLA) as a Hydrophobic Coating Material on Kraft Paper for Imparting Barrier Properties in Coated Abrasive Applications

Cited by 33 publications

References 15 publications

Design and development of Schiff’s base (SB)-modified polylactic acid (PLA) antimicrobial film for packaging applications

Design and development of Schiff’s base (SB)-modified polylactic acid (PLA) antimicrobial film for packaging applications

Hybrid paper sheets with improved barrier properties

Improved Oil Resistance of Cellulose Packaging Paper by Coating with Natural Polymer Derived Materials

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