Crosslinked starch-coated cellulosic papers as alternative food-packaging materials

Hassani, Fatima‐Zahra Semlali Aouragh; Salim, Mohamed Hamid; Kassab, Zineb; Sehaqui, Houssine; Ablouh, El‐Houssaine; Bouhfid, Rachid; Qaiss, Abou el kacem; Achaby, Mounir El

doi:10.1039/d2ra00536k

Cited by 28 publications

(5 citation statements)

References 61 publications

(129 reference statements)

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“…Parallel to the increase in rigidity, the CMT values also increase (Cheșcă et al , 2018). The rigidity of paper and board generally depends on the amount of lignin it contains (Chen et al , 2001; Hassani et al , 2022; Nandal et al , 2021). Stiffness (rigidity) decreases when comparing papers of the same basis weight.…”

Section: Resultsmentioning

confidence: 99%

Effects of precipitated and ground calcium carbonate coating on mechanical properties of fluting paper

Çiçekler

Üzüm

Çopurkuyu

2023

PRT

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Purpose The purpose of this study is to investigate the effects of a pigment coating on the mechanical properties of fluting paper. Design/methodology/approach Two different calcium carbonate pigments were used in the preparation of the coated color, precipitated calcium carbonate (PCC) and ground calcium carbonate (GCC). Fluting paper produced by recycling waste paper was used as base paper. The effects of PCC and GCC pigments on mechanical properties were compared. Ring crush test (RCT), corrugating medium test (CMT), corrugating crush test (CCT), tensile and burst strength tests were applied to the coated papers, and the results were compared to the mechanical properties of base paper. Findings The tensile and burst indices of the coated papers were found to be higher than base papers about 13.9% and 6.05%, respectively. While the coating process positively affected the RCT and CCT values, it did not show a significant impact on the CMT values. GCC, one of the pigments used in coating colors, had a more effective effect on the mechanical properties of fluting papers compared to PCC. Originality/value These results suggest that coating of fluting papers has a positive effect on mechanical properties and the use of GCC as a pigment is more effective than PCC.

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Section: Resultsmentioning

confidence: 99%

Effects of precipitated and ground calcium carbonate coating on mechanical properties of fluting paper

Çiçekler

Üzüm

Çopurkuyu

2023

PRT

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Section: Resultsmentioning

confidence: 99%

“…One of the metrics derived from this test is the storage modulus (G 0 ), commonly known as the elastic modulus, and it denotes the material's ability to conserve energy in the elastic state; the higher the storage modulus, the stiffer the material. [52,53] Figure 7 depicts the evolution of elaborated binary and ternary composites storage modulus as a function of frequency. For PP/RA 1 binary composites, the addition in the amount of FA produces a proportional increase in storage modulus, which can be explain by the intrinsic rigidity of the filler, indicating that FA addition significantly improves the PP matrix rigidity and supports a substantial part of the applied load.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…These findings match perfectly with tensile results, stating that TPU addition led to a more substitution of PP matrix by the soft elastomers (rule of mixture), thereby improving the composites ductility and flexibility, without significantly reducing their rigidity. [52] Figure 8 describes how the addition of TPU to the PP/FA binary system affected the composites' hardness. It can be clearly observed that the hardness values of all the samples lie in the range of 55-67 Shore D. Regarding the PP/RA 1 composites, the addition of FA improves the hardness of PP and achieves a maximum of 66.76 Shore D at 20 wt%, which can be explain by the reinforcing effect of FA rigid particles.…”

Section: Thermal Propertiesmentioning

confidence: 99%

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Toughening effect of thermoplastic polyurethane elastomer on the properties of fly ash‐reinforced polypropylene‐based composites

et al. 2022

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In general, particulate reinforcement is known to greatly enhance the polymer composite rigidity at the expense of its ductility. Therefore, careful addition of elastomers can restore the composites toughness without sacrificing their stiffness. Thus, this work investigates the effect of TPU elastomer (thermoplastic polyurethane) on the ductile character of fly ash‐reinforced polypropylene (PP) composites. First, fly ash powder with particle‐size less than 63 μm (FA) was analyzed in terms of its physico‐chemical properties. The as‐characterized FA fine powder was then incorporated into PP polymer matrix to produce 50/50 wt% PP/FA masterbatch using extrusion process. Thereafter, the as prepared masterbatch was used to elaborate three polymer composite series by modifying the amount of FA and TPU via injection molding process. Binary and ternary PP composites filled with 5, 10, 15, and 20 wt% of FA or 80%FA/20%TPU or 50%FA/50%TPU were successfully manufactured. The resulted composites series were characterized in terms of their structural, morphological, thermal, and mechanical properties. It was found that the addition of FA into PP composites improved the composites' rigidity but reduced their ductility, due to the high reinforcing ability of FA particles. However, the inclusion of TPU to the binary PP/FA system exhibited a beneficial effect for restoring the ductility without a dramatic loss in stiffness, due to the toughening effect of TPU elastomer and improved interfacial adhesion. Overall, the above results suggest that a balance between the ratios of rigid particles and elastomer in a polymer matrix produces a multiphase polymer system with optimal mechanical performance, which make them promising materials for engineering applications.

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“…The goal of the incorporation of hemp fibres into cellulosic aerogels is to modify the sorption capacities of cellulosic aerogels by incorporating these materials into the cellulosic fibres for the aerogels, without prior treatment or dissolution. In addition, starch should be used as a sustainable cross-linker [25] which, according to [7], also leads to a significant increase in the sorption capacity of the cellulose aerogel. The aerogel samples are rendered hydrophobic with a silane reagent, creating an oil sorbent, characterised by the contact angle measurements with water drops.…”

Section: Introductionmentioning

confidence: 99%

A Cellulose Aerogel Made from Paper and Hemp Waste Added with Starch for the Sorption of Oil

Paulauskiene,

Sirtaute,

Uebe

2023

JMSE

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One sustainable method of removing oil spills is the use of sorbents. In this study, aerogels made from paper waste and crosslinking starch are investigated as sorbents. Aerogels have a high porosity and, thus, achieve a high sorption capacity. The paper waste aerogels are compared with aerogel samples that also contain hemp fibres as a composite. After hydrophobisation with methyltrimethoxysilane, the maximum sorption capacity of crude oil, marine diesel oil and lubricating oil is investigated. Aerogels made of cellulose from paper waste with starch show the highest sorption capacity of about 50 gg−1 for all studied oils. Unfortunately, hemp fibres offer no advantage in sorption capacity, but they do mitigate a decrease in sorption capacity with an increase in cellulose fibre content. This could be an advantage in a possible commercial product, so that the properties do not vary as much.

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Crosslinked starch-coated cellulosic papers as alternative food-packaging materials

Abstract: In general, during the production of cellulosic materials for food-packaging applications, lignin and other amorphous components are usually removed via the pulping and multilevel bleaching process to entirely separate them from the fiber.

Cited by 28 publications

References 61 publications

Effects of precipitated and ground calcium carbonate coating on mechanical properties of fluting paper

Effects of precipitated and ground calcium carbonate coating on mechanical properties of fluting paper

Toughening effect of thermoplastic polyurethane elastomer on the properties of fly ash‐reinforced polypropylene‐based composites

A Cellulose Aerogel Made from Paper and Hemp Waste Added with Starch for the Sorption of Oil

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