PAPER making! FROM THE PUBLISHERS OF PAPER TECHNOLOGY INTERNATIONAL Volume 7, Number 3, 2021
microstructure and properties of the fabricated PANI/CNC composite were comprehensively characterized. Furthermore, the effect of the PANI/CNC composite on the properties of paper coatings and coated paper was systematically investigated. The results showed that the viscosity and viscoelasticity of paper coatings were increased as a function of the PANI/CNC composite addition. Meanwhile, the increased CNC ratio in PANI/CNC composite led to the decreased viscosity and viscoelasticity of paper coatings. Furthermore, surface coating application was found to impart desired electro-conductivity and enhanced mechanical properties to coated paper. Compared to the coated paper without PANI/CNC composite, the coated paper with 4 wt% CNC added PANI/CNC composite maintained an electro-conductivity of 4.0 S·m −1 and exhibited increases of 14.6%, 30.7% in tensile index and folding strength, respectively. In particular, the electro- conductivity and mechanical properties of coated paper were also enhanced with the increased ratio of CNC in PANI/CNC composite. MOULDED PULP “ A thermal insulator manufacturing, using solid residuals from pulp and paper factories in Missan City”, Waleed Khalaf Jabbar Allamy & Ibrahim Ali Hameed Al- Najati, AIP Conference Proceedings, 2338, 040022 (2021). Residuals from pulping process of Iraqi pulp and papermaking factories was taken to produce a thermal insulator by wetting, crushing, and pressing to a certain shape to get a board called by the authors as “Cellulose Board” that can be used as a thermal insulator for air conditioning and piping systems carrying hot water for heating. It was found that thermal conductivity of cellulose board is 0.0311 W/m.c hence it can be compared with common thermal insulators such as rock wool and fiber glass which is expensive from economic point of view. It is recommended to use vapor barriers to prevent board from getting moisture. Additionally, it is recommended not to use Cellulose Board in a high temperature application. “ Molded Fiber and Pulp Products as Green and Sustainable Alternatives to Plastics: A Mini Review ”, Yanling Zhang, Chao Duan, Swetha Kumari Bokk, Zhibin He & Yonghao Ni, Journal of Bioresources and Bioproducts , published online 14 October 2021. There are significant incentives/pressures on decreasing the use of plastics and their related products in the packaging industry, correspondingly, strong demands are emerging for clean, renewable, recyclable/ biodegradable packaging products. In this context, molded fiber/pulp products have attracted increasing attention, due to their green/sustainable advantages, simply because the raw materials used are plant-based and/or recycled fibers. Many companies have switched their packing practices from plastics to more environmentally friendly products, such as molded fiber products, which already have had and will continue to have obvious effect on packaging industries. This paper initially provides an overview on the general concept of molded pulp products, and further summarizes the different types of molded fiber products in terms of natural fiber sources, manufacturing processes, current and emerging applications as well as the environmental sustainability of molded products. “ Effect of Mono- and Bilayer Coating of Nanofibrillated Cellulose, its Modification, and Shellac on Properties of Molded Pulps ”, Supattra Klayya, Thawan Chotimarnon, Nattaya Tawichai, Uraiwan Intatha & Nattakan Soykeabkaew, Key Engineering Materials , Vol.889, pp.79-84. A molded pulp is increasingly used as eco-packaging, but it has poor water resistance. Therefore, surface coating is common to perform on pulp or paper packaging to overcome this shortcoming. In this study, the bagasse (BG) molded pulp sheets were mono-and bilayer coated with nanofibrillated cellulose (NFC), modified NFC (mNFC), and shellac (S) by using a spin coating technique. Surface morphology,
Technical Abstracts
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