Extraction of Micro- and Nano-Fibrils from Nylon 6/ Polypropylene Grafted with Maleic Anhydride/Polypropylene Blended Films
Message:
Abstract:
Atechnical feasibility study has been conducted on production of nano- andmicro-fibrils from nylon 6/polypropylene grafted with maleic anhydride/polypropylene blended films. Fibrils are prepared in four consecutive steps.In the first step the polymers melt blended in an extruder with and without compatibilizersto produce chips; in the second step films are extruded from polymer blends chips,in the third step films are cold drawn with different draw ratios at room temperature andin the forth step fibrils are extracted by Soxhlet extraction with formic acid as solventfor nylon 6. The films and fibrils were examined by scanning electron microscope andFTIR spectroscopy. It is found that the polypropylene dispersed phase deforms and coalescesinto elongated fibrils during drawing operation. The fibrils’ diameters in theblends containing compatibilizer are more uniform and are smaller than those from filmswithout compatibilizers. The thinnest polypropylene fibril observed has a diameteraround 300 nm with the aspect ratio above 150. The stress-elongation curves show threedistinctive regions, elastic, yield and hardening-leading to breakage. The elastic regionis short and follows by necking and yield, i.e., elongation without increase in load. Thehardening region is accompanied by the increase in the slope. The deformations of thepolypropylene particles are noticed during the last regions of the extension; the fibrildeformations seem to be more severe during breakage.
Language:
Persian
Published:
Iranian Journal of Polymer Science and Technology, Volume:23 Issue: 2, 2010
Page:
155
magiran.com/p771113  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!