| تعداد نشریات | 282 |
| تعداد نشریات سازمان | 80 |
| تعداد شماره‌ها | 3,272 |
| تعداد مقالات | 36,149 |
| تعداد مشاهده مقاله | 55,713,738 |
| تعداد دریافت فایل اصل مقاله | 94,492,330 |
تیمار آرد پوسته برنج با اسید استیک جایگزین سازگارکننده MAPE در چند سازه پلی اتیلن سنگین/آرد پوسته برنج | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 9، دوره 30، شماره 3 - شماره پیاپی 52، مهر 1394، صفحه 443-456 اصل مقاله (474.37 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2015.13000 | ||
| نویسنده | ||
| عبدالله نجفی* | ||
| استادیار، گروه علوم و صنایع چوب و کاغذ، دانشگاه آزاد اسلامی واحد چالوس | ||
| چکیده | ||
| در این تحقیق، تاثیر تیمار شیمایی آرد پوسته برنج با اسید استیک بر خواص فیزیکی و مکانیکی چند سازه آرد پوسته برنج/ پلی اتیلن سنگین مورد بررسی قرار گرفت. به این منظور آرد پوسته برنج با اندازه مش 40+ /60 - انتخاب شد. ابتدا آرد خشک شده در محلول هیدروکسید سدیم غوطه ور و سپس با اسید استیک گلاسیال تحت تیمار شیمیایی قرار گرفت. پودر پلی اتیلن سنگین با آرد تیمار شده خشک به نسبت 60 درصد وزن پرکننده در دستگاه مخلوط کن داخلی با هم ترکیب شدند. بعد از آسیاب شدن مخلوط بی شکل حاصل و به کمک دستگاه تزریق، چند سازه هایی از آنها ساخته شد. چند سازه های بدون تیمار آرد پوسته برنج /پلی اتیلن سنگین همراه با سازگار کننده مالیک انیدرید جفت شده با پلی اتیلن سنگین و نیز فاقد سازگار کننده به همین روش تولید و خواص فیزیکی، مکانیکی سه نوع چند سازه تولید شده مورد بررسی و مقایسه قرار گرفت. تحلیل دینامیکی، مکانیکی-حرارتی نمونه‌ها در دامنه دمایی 50- تا C˚150 + انجام و مدول ذخیره و مدول اتلاف اندازه‌گیری شد. جهت اطمینان از انجام تیمار شیمیایی از طیف سنجی مادون قرمز استفاده شده است. نتایج طیف سنجی نشان داد که شدت جذب گروه عاملی هیدروکسیل در ناحیه نزدیک به cm-13436 و نیز گروه کربونیل در محدودهcm-1 1741 کاهش یافته است. نتایج آزمون ها نیز نشان داد که تیمار آرد پوسته برنج با اسید استیک گلاسیال تمامی خواص مورد مطالعه را در چند سازه بهبود بخشید. | ||
| کلیدواژه‌ها | ||
| تیمار شیمیایی؛ آرد پوسته برنج؛ پلی اتیلن سنگین؛ اسید استیک گلاسیال | ||
| عنوان مقاله [English] | ||
| Chemical Treatment of Rice Husk with Acetic Acid substitute for MAPE Compatibilizer in Rice Husk/High Density Poly Ethylene Composites | ||
| نویسندگان [English] | ||
| Abdollah Najafi | ||
| Assistant Prof., Department of Wood Science and Technology Islamic Azad University Chaloos Branch, Chaloos, Iran Chaloos, Iran, | ||
| چکیده [English] | ||
| In this study, chemical treatments of rice husk flour on physical and mechanical properties of rice husk flour / high density polyethylene composites were studied. Rice husk was milled and its flour through the sieve of 60 meshes was selected for using. Initially, dried rice husk flour was subjected to chemical treatment with acetic acid and then, was mixed with powder of high density polyethylene at weight ratio of 60% filler loading in an internal mixer. After milling of mixed matreials, samples of composites were made by injection moulding method. Physical and mechanical properties of treated rice husk flour / high density polyethylene composites were compared to untreated composite and a composite including a PE-g-MA coupling agant (MAPE) that were produced in the same method. Dynamic Mechanical-Thermal Analyze (DMTA) of specimens in the temperature range of -50 to +150 ◦C were taken and storage modulus and loss modulus were measured. FT-IR spectra of chemical treatments of rice flour husks were also investigated to what extent changes in the functional groups being studied. Results of FT-IR indicated that the chemical treatment of rice husk led to a change of OH group absorbance on 3436 cm-1 and a peak in the region of 1741 cm-1 related to functional group of C=O. Results of tests also indicated that all of properties in composites including of treated rice husk flour with acetic acid were improved. | ||
| کلیدواژه‌ها [English] | ||
| chemical treatment, HDPE, Rice husk, MECHANICAL PROPERTIES, physical properties | ||
| مراجع | ||
|
-Agrawal, R., Saxena, N., Sharma, K., Thomas, S. and Sreekala, M., 2001. Activation Energy and Crystallization kinetics of untreated and treated Oil Palm Fiber Reinforced Phenol Formaldehyde Composite. Materials Science and Engineering A. 277(2):77-82. - Amir Khizi, d.H., 1380. Working blend polymer industry. Author: John, S., Dick. Publication Center, Isfahan University. -Bigg, D. M., Hiscock, D. F. Peterson, J. R. and Bradbury, E. J. 1988, High Performance Thermoplastic Matrix Composites, Journal of Thermoplastic Composite Materials, 1(2):146-160. -Bledzki, A. K., and Gassan, J., 1999. Composites reinforced with cellulose based fibers. Journal of Progress in polymer science. 24, 221-274. -Choudhury, A., and Adhikari, B., 2007, Recycled milk pouch and virgin LDPE-LLDPE-based jute fiber composites. Polymer Composites. 28:78-88. -Chow P., Bowers, T., Bajwa D. S. and Lu, W.D. 1999. Mechanical holding power of melt-blend boards made from recycled Plastic and kanaf. Second annuol American Kanaf Secoity Conference.Feb.25-26. -Espert,A., Vilaplana, F. and karlsson S., 2004, Comparison of water absorption in natural cellulosic fiber from wood and one-year crops in polypropylene composites and its influence on their mechanical properties.Composites: part A 35:1267-1276. -Farsi, M., Khademi Islam, H., Tlaeipour, M., Hmasy, A. and Ghasemi, A., 2008, The effect of chemical modification on mechanical properties of polypropylene composite lignocellulosic waste, Marine Sciences and Natural Resources, Issue IV, 1387, 64-53. -Farsi, M., 2010, Wood–plastic composites: influence of wood flour chemical modification on the mechanical performance, Journal of Reinforced Plastics and Composites, 29(24), PP: 3587–3592. -Ghasemi, I. and Farsi, M., 2010. Interfacial Behavior of Wood Plastic Composites: Effect of Chemical Treatment on Wood Fibres. Iraninan Polymer journal. 19(10): 811-818. -Garcia-Jaldon, C., Dupeyre, D., and Vignon, M. R., 1998. Fibres from semi-retted hemp bundles by steam explosion treatment. Biomass Bioenergy.14:251-260. -Herrera- France, p. and Aguilar, M., 1997. Effect of fiber treatment on the mechanical properties of LDPE- henequen cellulosic fiber composite. Journal of applied polymer science 10 (1): 197-207. -Hill, A. S. C., Abdul Khalil, H. P. S., and Hale, M. D., 1998. A study of the potential of acytilation on improve the properties of plant fibres. Industrial CropsandProducts. 8(1):53. -Huda, M. S., Mohanty, A. K., Drzal, L. T., Misra, M., and Schut, E. 2005. Green composites from recycled cellulose and poly(Lactic Asid): Physico-mechanical and morphological properties evaluation. Journal of materials and science. 16, 4221-4229. -Ichazo, M., Albano, C., Gonzalez, J., Perera, R., and Candal, M., 2001. Polypropylene/ wood flour composites: treatments and properties. Composites structure. 54(3): 207-214. -Jahn, A., Schroder, M. W., Futing, M., Schenzel, K., and Diepenbrock, W., 2002. Characterization of alkali treated flax fibres by means of FT Raman spectroscopy and environmental scanning electron microscopy. Spectrochim Acta, part A: Molecular and Biomolecular Spectroscopy. 58(10):2271-9. -Jacob, M., Thomas, S., and Varughese, K., 2004. Mechanical properties of sisal I oil palm hybrid fiber reinforced natural rubber composites. Composite Science and Technology. 64: 955-965. -Kokot, S. and S. Stewart, 1995. An Exploratory Study of Mercerized Cotton Fabrics by DRIFT Spectroscopy and Chemometrics. Textile Research Journal. 65(11), PP: 643-651. -Lu, J. Z., Wu, Q. and Macnob, H. S. 2000. Chemical coupling in wood fiber polymer composites: a review of coupling agents and treatments. Wood and Fiber Science 32(1):88-104. -Matuana, L. M., Balatinecz, J. J., and Park, C. B., 1998. Effect of surface properties on adhesion between PVC and wood veneer laminates. Polymer Engineer Science. 38, 765-773. -Mishra, S., Misra, M., Tripathy, S. S., Nayak, S. K., and Mohanty, A. K., 2001. Graft Copolymerization of Acrylonitrile on Chemically Modified Sisal Fibers. Macromolecular Materials and Engineering. 286(2):107-113. -Mohanty, A. K., Misra, M., and Drzal, L. T., 2001. Surface modifications of natural fibers and performance of the resulting biocomposites: an overview. Composite Interfaces 8 (5), 313-343. -Oksman, K., Lindberg, H. and A. Holmgren, 1998, The nature and location of SEBS-MA compatibilizer in polyethylene-wood flour composites, Journal of Applied Polymer Science, 69(1), PP: 201-209. -Rahimi, H., 2000, The introduction of composites, Proceedings of the Second and short-term training course reinforced plastics. Amirkabir University of Technology. -Ray, D., B.K Sarkar B. K., Rana and Bose, N. R., 2001. effect of the alkali treated jute fibers on composite properties. Bulletin of materials science. 24(2): 129-135. -Rowell, R. M., Young, R.A. and Rowell, J. K., 1997. Paper and composites from agro-based resources. CRC lewis Publishers, Boca Raton FL. -Saheb, D., and Jog J., 1999. Natural fiber polymer composites: a review. Advances in Polymer Technology.18 (1): 351–363. -Shakeri, A. R., and Hashemi S. A., 2004. Effect of coupling agents on mechanical properties HDPE/wheat straw composites. Polymers & polymer composites 12 (5): 449-452. -Sreekala, M. and Thomas, S., 2003. Effect of fiber modification on water-sorption characteristics of oil palm fibers. Composite Science and Technology. 63(6):861 -Tserki,V., Matzinos, P., Zafeiropoulos, N.E., and Panayiotou, C., 2006. Development of Biodegradable Composites with Treated and Compatibilized Lignocellulosic Fibers, Journal of Applied Polymer Science, 100(6), PP: 4703-4710. -Wambua, P., Ivens, J., and Verpoest, I., 2003. Natural fibers: can they replace glass in fiber reinforced plastic? Composites Science and Technology. 63 (1): 1259–1264. -Yam, K. L., Gogoi, B., Lai, C. C., and Selkea, S. E., 1998. compounding wood fibers and recycled HDPE using a twin-screw extruder. Journal of Polymer Science and Engineering, 30(11): 693-699. -Zhang, S. Y., Zhang, Y., Bousmina, M., Sain, M., and Choi, P. 2007. Effects of Raw fiber Materials, Fiber Content, and Coupling Agent Content on Selected Properties of Polyethylene/Wood Fiber Composites. Polymer Engineering and Science, 47(10):1678-1687. | ||
|
آمار تعداد مشاهده مقاله: 2,122 تعداد دریافت فایل اصل مقاله: 1,681 |
||