عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TLpq238152646
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Studies of the terephthalic acid and dihydroxy diphenyl sulfone liquid crystalline copolymer and its composites
نام عام مواد
[Thesis]
نام نخستين پديدآور
K. A. Khan
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
King Fahd University of Petroleum and Minerals (Saudi Arabia)
تاریخ نشرو بخش و غیره
1996
مشخصات ظاهری
نام خاص و کميت اثر
87
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
M.S.
کسي که مدرک را اعطا کرده
King Fahd University of Petroleum and Minerals (Saudi Arabia)
امتياز متن
1996
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
A liquid crystalline polymer (LCP) was synthesized by an interfacial polycondensation reaction at room temperature from terephthaloyl chloride and p,p-dihydroxydiphenyl sulfone. The LCP synthesized was so stable and molecularly rigid that it did not show any phase transition until it degraded at about 320C. Composites of the LCP with polycarbonate (PC), polystyrene (PS) and sulfonated polystyrene (SPS) were formed by compression molding at a temperature at which the thermoplastic matrix was in the melt state. They were thermally analyzed by differential scanning calorimetry (DSC). Tensile specimens were cut from the compression molded plates and mechanical tests were performed. Morphology of the material systems was studied by performing scanning electron microscopy (SEM) analysis on cryogenically fractured specimens. For LCP/PS and LCP/SPS systems, a sharp two phase morphology was formed which suggested poor interfacial adhesion. Tensile strength of both systems decreased with LCP addition. The LCP/PC system also revealed a two phase morphology, however the interfaces between the LCP domains and the PC matrix were not so well defined showing better interfacial adhesion than the two previous systems studied. Stronger bonding between the LCP and PC resulted in a significant improvement in the mechanical behavior of PC by LCP addition.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Applied sciences
موضوع مستند نشده
Chemical engineering
موضوع مستند نشده
Chemical engineering
موضوع مستند نشده
Polymers
موضوع مستند نشده
Pure sciences
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
K. A. Khan
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
