بررسی خواص کاربردی کامپوزیت چوب- ‌پلاستیک تهیه‌شده از پودر مایع پخت سیاه حاصل از فرایند خمیرکاغذسازی سولفیت قلیایی- آنتراکینون (AS-AQ) به‌همراه کاه گندم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناس ارشد، گروه علوم و صنایع چوب و کاغذ، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه گنبد کاووس، گنبد، ایران

2 دانشیار، گروه علوم و صنایع چوب و کاغذ، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه گنبد کاووس، گنبد، ایران

3 استادیار، گروه علوم و صنایع چوب و کاغذ، دانشکدۀ کشاورزی و منابع طبیعی، دانشگاه گنبد کاووس، گنبد، ایران

4 دانشیار، گروه علوم و صنایع چوب و کاغذ، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج، ایران

چکیده

توسعه و کاربرد منابع طبیعی و تجدیدشونده در ساخت انواع کامپوزیت‌ چوبی و یافتن راهکارهایی برای کاهش سهم ترکیبات شیمیایی مضر همواره مدنظر محققان مختلف بوده است. این تحقیق با هدف بررسی کاربرد پودر لیکور سیاه حاصل از فرایند خمیرکاغذسازی سولفیت قلیایی-آنتراکینون در تولید کامپوزیت چوب- ‌پلاستیک به‌همراه پسماند زراعی کاه گندم و پلیمر پلی‌پروپیلن با استفاده از جفت‌کنندۀ مالئیک انیدرید پیوند‌خورده با پلی‌پروپیلن (MAPP) انجام گرفت. برای ساخت کامپوزیت‌ها از تقویت‌کنندۀ آرد کاه گندم در سه سطح 30، 40 و 50 درصد و پودر لیکور سیاه حاصل از فرایند خمیرکاغذ‌سازی سولفیت قلیایی-آنتراکینون (AS-AQ) در چهار سطح صفر، 5، 10 و 15 درصد نسبت به وزن خشک آرد کاه گندم استفاده شد. سپس مقاومت و مدول خمشی، مقاومت و مدول کششی، مقاومت به ضربه و واکشیدگی ضخامت بعد از 2 و 24 ساعت غوطه‌وری در آب نمونه‌های آزمونی تهیه‌شده از کامپوزیت‌ها اندازه‌گیری و تجزیه‌وتحلیل آماری شد. نتایج نشان داد که با استفاده از پودر لیکور حاصل از فرایند سولفیت قلیایی- آنتراکینون به‌همراه آرد کاه گندم، مقاومت خمشی به پروپیلن خالص در حدود 50 درصد افزایش یافت. مدول خمشی و کششی و مقاومت به ضربه کامپوزیت‌ها در حدود 100 درصد نسبت به پلیمر خالص افزایش داشت. واکشیدگی ضخامت کامپوزیت‌ها با افزایش سهم پودر حاصل از مایع پخت و کاه گندم نیز افزایش داشت. به‌طور کلی، نتایج نشان داد که جایگزین کردن پودر مایع پخت سیاه با بخشی از آرد کاه گندم نه‌تنها سبب تغییرات منفی چشمگیری در خواص کامپوزیت‌های چوب- پلاستیک نشد، بلکه بهبود برخی از ویژگی‌ها را نیز در پی داشت.

کلیدواژه‌ها

عنوان مقاله [English]

Investigation on the functional properties of wood-plastic composite prepared from black liquor powder obtained from alkali sulfite-anthraquinone (AS-AQ) pulping process with wheat straw

نویسندگان [English]

  • Behzad Babaie 1
  • Loya Jamalirad 2
  • Vahid Vaziri 3
  • Sahab Hedjazi 4
1 M.Sc. Graduate, Department of Wood and Paper Science and Engineering, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad, I.R. Iran
2 Assoc. Prof., Department of Wood and Paper Science and Engineering, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad, I.R. Iran
3 Assist. Prof., Department of Wood and Paper Science and Engineering, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad, I.R. Iran
4 Assoc. Prof., Department of Wood and Paper Science and Engineering, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran
چکیده [English]

Development and application of natural and renewable resources in the manufacture of wood composites is one of the important issues that are always considered by various researchers and are looking for solutions to reduce the share of harmful and hazardous chemical compounds. Therefore the aim of this study was to investigate the use of black liquor powder obtained from alkali sulfite anthraquinone pulping process in the production of wood plastic composite with wheat straw residue and polypropylene polymer and using MAPP coupling agent. In order to make  the wood plastic composites, wheat straw flour enhancer in three levels of 30, 40 and 50% and black liquor powder obtained from alkaline sulfite anthraquinone (AS-AQ) pulping process in four levels of zero, 5, 10 and 15%  relative to dry weight of wheat flour was used. Then the flexural strength and modulus, tensile strength and modulus, impact resistance and thickness swelling within 2 and 24 hours immersion in water of the test specimens prepared from the wood plastic composites were measured and statistically analyzed. The results showed that by using liqueur powder obtained from alkali sulfate-anthraquinone process with wheat straw flour, the flexural strength increased about 50% compared to pure propylene. The flexural and tensile modulus and impact resistance of the composites approximately 100% compared to pure polymer. The thickness swelling of the composites also increased with increasing the amount of black liquor powder and wheat straw. In general, the results showed that replacing the black liquor powder with a part of wheat straw flour not only did not lead to significant negative changes in the properties of wood plastic composites but also improved some mechanical properties.

کلیدواژه‌ها [English]

  • Black Liquor Powder
  • Sulfite-anthraquinone process
  • Wood-plastic composite
  • Agro waste

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نشریه جنگل و فرآورده های چوب
دوره 74، شماره 2
شهریور 1400
صفحه 247-260

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