مقایسة فیلم نانوالیاف سلولز تولیدی به روش هواخشک و خلأخشک حاصل از خمیرکاغذ کرافت رنگ‌بری‌نشدة پوست کنف

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار گروه صنایع خمیر و کاغذ، دانشکدة جنگل‌داری و محیط زیست، دانشگاه صنعتی خاتم الانبیاء بهبهان، بهبهان، ایران

2 دانشیار گروه صنایع خمیر و کاغذ، دانشکدة صنایع چوب و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران

چکیده

الیاف سلولز نانوفیبریله‌شده از خمیرکاغذ کرافت رنگ‌بری‌نشدة پوست کنف تهیه و پس از ساخت فیلم‌های نانوالیاف سلولز هواخشک و خلأخشک ویژگی‌های کششی آن‌ها بررسی شد. قابلیت خمیرکاغذ رنگ‌بری‌نشدة پوست کنف برای تولید نانوالیاف سلولز با استفاده از میکروسیال‌کننده مناسب است؛ به طوری که استفاده از تعلیق خمیرکاغذ با خشکی 5/5 درصد نیز قابلیت تولید نانوالیاف سلولز را دارد. تصویر میکروسکوپ الکترونی عبوری نشان‌دهندة تولید نانوالیاف سلولز با ابعاد کمتر از 100 نانومتر بود. اگرچه دانسیتة فیلم خلأخشک بیشتر از هواخشک بود (1105 در مقایسه با 1007 کیلوگرم بر متر مکعب)، شاخص مقاومت به کشش فیلم هواخشک بیشتر از خلأخشک به دست آمد (148 در مقایسه با 140 نیوتن‌متر بر گرم). همچنین مقاومت کششی، شاخص انرژی جذب کششی، و درصد کرنش فیلم هواخشک نیز بیشتر از فیلم خلأخشک بود. مدول کشسانی فیلم نانوالیاف سلولز خلأخشک بیشتر از هواخشک بود که انتظار می‌رود مرتبط با بیشتربودن دانسیتة آن باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Comparison of Produced Film of Cellulose Nanofibers by Dried and Vacuum Filtrated Method from Unbleached Kraft Pulp of Kenaf Bast Fiber

نویسندگان [English]

  • Pejman Rezayati Charani 1
  • Mohammadreza Dehghani Firouzabadi 2
1 Assistant Professor, Pulp and Paper science and technology Group, Faculty of Forestry and Environmental, Behbahan Khatam Alanbia University of Technology, Behbehan, I.R. Iran
2 Associate Professor, Department of Pulp & Paper Technology, Faculty of Wood and Paper Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, I.R. Iran
چکیده [English]

 
Nanofibrillated cellulose fibers were produced from unbleached kraft pulp of kenaf bast fiber. Air dried and vacuum filtrated films of cellulose nanofibers were produced and their density and tensile properties were investigated. Kenaf bast fiber unbleached kraft pulp has good potential for production of cellulose nanofibers by microfluidizer; so that the use of kenaf bast fiber unbleached kraft pulp suspension with consistency about 5.6% has the potential for cellulose nanofibers production. Transmission electron microscopy image showed the production of cellulose nanofibers with dimensions less than 100 nanometers. Although the apparent density of vacuum filtrated film was more than that of the air dried film (1105 compared to 1007 kg/m3), tensile strength index of the air dried film was more than that of the vacuum filtrated film (148 compared to 140 Nm/g). Tensile strength, tensile energy abortion index and strain at breaking percentage of the air dried film were more than those of the vacuum filtrated film too. However, the elastic modulus of vacuum filtrated film of cellulose nanofibers was more than that of the air dried film that it can be related to the apparent density different of these films.

کلیدواژه‌ها [English]

  • kenaf bast fiber
  • unbleached kraft pulp
  • film of cellulose nanofibers
  • microfluidizer
  • Strength properties
 

[1]. Faezipour, M., Hamzeh, Y., and Mirshokraii, S. A. (2000). Evaluation of kenaf as a raw material in paper manufacturing pulp. Iranian Journal Natural Resource, 53(3): 239-250.

[2]. Hossain, M. D., Hanafi, M. M., Jol, H., and Hazandy, A. H. (2011). Growth, yield and fiber morphology of kenaf (Hibiscus cannabinus L.) grown on sandy bris soil as influenced by different levels of carbon. African Journal of Biotechnology, 10(50): 10087-10094.

[3]. Bahtoee, A., Zargari, K., and Baniani, E. (2012). An Investigation on Fiber Production of Different Kenaf (Hibiscus cannabinus L.) Genotype. World Applied Sciences Journal, 16(1): 63-66.

[4]. Shakhes, J., Dehghani-Firouzabadi, M. R., Rezayati-Charani, P., and Zeinaly, F. (2010). Evaluation of harvesting time effects and cultivars of Kenaf on papermaking. BioResources, 5(2): 1268-1280.

[5]. Villar, J. C., Revilla, E., Gómez, N., Carbajo, J. M., and Simón, J. L. (2009). Improving the use of kenaf for kraft pulping by using mixtures of bast and core fibers. Industrial crops and products, 29: 301-307.

[6]. Mossello, A. A., Harun, J. Tahir, P. M., Resalati, H., Ibrahim, R., Fallah Shamsi, S. R., and Mohmamed, A. Z. (2010). A Review of Literatures Related of Using Kenaf for Pulp Production (Beating, Fractionation, and Recycled Fiber). Modern Applied Science, 4(9): 21-29.

[7]. Johansson, C., Bras, J., Mondragon, I., Nechita, P., Plackett, D., Šimon, P., Svetec, D. G., Virtanen, S., Baschetti, M. G., Breen, C., Clegg, F., and Aucejok, S. (2012). Renewable fibers and bio-based materials for packaging applications- a review of recent development. BioResources, 7(2): 2506-2552.

[8]. Klemm, D., Kramer, F., Moritz, S., Lindström, T., Ankerfors, M., Gray, D., and Dorri, A. (2011). Nanocelluloses: A New Family of Nature-Based Material. Angewandte Chemie International Edition, 50: 5438-5466.

[9]. Spence, K. L., Venditti, R. A., Habibi, Y., Rojas, O. J., and Pawlak, J. J. (2010). The effect of chemical composition on microfibrillar cellulose films from wood pulps: Mechanical processing and physical properties. Bioresource Technology, 101: 5961-5968.

[10]. Spence, K. L., Venditti, R. A., Habibi, Y., Rojas, O. J., and Pawlak, J. J. (2010). Aspects of raw materials and processing conditions on the production and utilization of microfibrillated cellulose. In: International conference on nanotechnology for the forest products industry. Otaniemi, Espoo, Finland.

[11]. Spence, K. L., Venditti, R. A., Rojas, O. J., Habibi, Y., and Pawlak, J. J. (2010). The effect of chemical composition on microfibrillar cellulose films from wood pulps: Water interactions and physical properties for packaging applications. Cellulose, 17: 835-848.

[12]. Jonoobi, M., Harun, J., Shakeri, A., Misra, M., and Oksmand, K. (2009). Chemical composition, crystallinity, and thermal degradation of bleached and unbleached Kenaf bast (Hibiscus cannabinus) pulp and nanofibers. BioResources, 4(2): 626-639.

[13]. Jonoobi, M., Harun, J., Tahir, P. M., Shakeri, A., SaifulAzry, S., and Davoodi Makinejad M. (2011). Physicochemical characterization of pulp and nanofibers from kenaf stem. Materials Letters, 65: 1098-1100.

[14]. Stenstad, P., Andresen, M., Tanem, B. S., and Stenius, P. (2008). Chemical surface modifications of microfibrillated cellulose. Cellulose, 15: 35-45.

[15]. Rezayati Charani, P., Dehghani-Firouzabadi, M., Afra, E., and Shakeri, A. (2013). Rheological characterization of high concentrated MFC gel from kenaf unbleached pulp. Cellulose, 20(2): 727-740.

[16]. Rezayati Charani, P., Dehghani-Firouzabadi, M., Afra, E., Blademo, Å., Naderi, A., and Lindström, T. (2013). Production of microfibrillated cellulose from unbleached kraft pulp of Kenaf and Scotch pine and its effect on the properties of hardwood kraft: microfibrillated cellulose paper. Cellulose, 20(5): 2559-2567.

[17]. Ankerfors, M. and Lindstrom, T. (2011). Method for providing a nanocellulose involving modifying cellulose fibers. US Patent Application Publication, 2011/0036522 A1. 2p.

[18]. Pääkkö, M., Ankerfors, M., Kosonen, H., Nykänen, A., Ahola, S., Österberg, M., Ruokolainen, J., Laine, J., Larsson, P. T., Ikkala, O., and Lindström, T. (2007). Enzymatic hydrolysis combined with mechanical shearing and high-pressure homogenization for nanoscale cellulose fibrils and strong gels. Biomacromolecules, 8: 1934-1941.

[19]. Siro´, I. and Plackett, D. (2010). Microfibrillated cellulose and new nanocomposite materials: a review. Cellulose, 17: 459-494.

[20]. Syverud, K. and Stenius, P. (2009). Strength and barrier properties of MFC films. Cellulose 16: 75-85.

[21]. Sehaqui, H., Liu, A., Zhou, Q., and Berglund, L. A. (2010). Fast Preparation Procedure for Large, Flat Cellulose and Cellulose/Inorganic Nanopaper Structures. Biomacromolecules, 11(9): 2195-2198.

[22]. Henriksson, M., Henriksson, G., Berglund, L. A., and Lindström, T. (2007). An environmentally friendly method for enzyme-assisted preparation of microfibrillated cellulose (MFC) nanofibers. European Polymer Journal, 43: 3434-3441.

[23]. Hassan, M. L., Mathew, A. P., Hassan, E. A., El-Wakil, N. A., and Oksman, K. (2012). Nanofibers from bagasse and rice straw: process optimization and properties. Wood Science and Technology, 46: 193-205.

[24]. Hassan, E. A., Hassan, M. L., and Oksman, K. (2011). Improving bagasse pulp paper sheet properties with microfibrillated cellulose isolated from xylanase-treated bagasse. Wood and fiber science, 43(1): 76-82.

[25]. Henriksson, M., Berglund, L. A., Isaksson, P., Lindström, T., and Nishino, T. (2008). Cellulose Nanopaper Structures of High Toughness. Biomacromolecules, 9: 1579-1585.