Natural Polymer Additives for Strengthening Packaging Materials
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A natural polymeric material, cellulose nanofibrils (CNFs), that can replace structural additives made of synthetic polymers was studied and characterized. The use of CNFs as a structural additive and the effect of adding them on the basic mechanical parameters of laboratory samples of packaging materials (corrugated sheet, i.e., the intermediate layer of corrugated cardboard) were studied. Addition of a structural additive made of natural renewable raw material to the recycled paper composite for corrugation was shown to increase the key paper quality indicators.
Keywordsstructural additives cellulose paper production corrugated cardboard mechanical strength indicators
The work was performed in the framework of FTP Research and Development in Priority Directions of the Russian Science and Technology Complex for 2014-2020 with financial support from the Ministry of Education and Science of Russia (unique identifier PNIER RFMEFI57717X0265). We thank staff members of OAO TsNIIB (Pravdinskii) N. V Saran, E. V Lepeshkina, and E. M Tovstoshkurov for discussing scientific and procedural aspects of the experiments; AO Solikamskbumprom (Solikamsk) for consultation; and staff members of AO Arkhangelsk Pulp-and-Paper Plant (Novodvinsk) for supplying samples of technical cellulose.
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