Nanofibrillated cellulose/carboxymethyl cellulose composite with improved wet strength

作者：Pahimanolis Nikolaos; Salminen Arto; Penttila Paavo A; Korhonen Juuso T; Johansson Leena Sisko; Ruokolainen Janne; Serimaa Ritva; Seppala Jukka^*

来源：Cellulose, 2013, 20(3): 1459-1468.

DOI：10.1007/s10570-013-9923-5

• Nanofibrillated cellulose
• Nanocellulose
• Carboxymethyl cellulose
• Ionic crosslinking
• Orientation
• Tape casting

In this paper, nanofibrillated cellulose/carboxymethyl cellulose (CMC) composite films were prepared using tape casting. The obtained transparent films showed shear induced partial alignment of fibrils along the casting direction, resulting in birefringence in cross polarized light. The carboxyl groups of CMC could be further utilized to create ionic crosslinking by treatment with glycidyl trimethyl ammonium chloride (GTMA). The GTMA treated composite films had improved mechanical properties both in wet and dry state. The chemical composition and morphologies of composites were analyzed with X-ray photoelectron spectroscopy, elemental analysis, scanning electron microscopy and wide-angle X-ray scattering.

• 出版日期2013-6