Abstract
Abstract
 In this work, pure Polypyrrole (PPy) and Polypyrrole (PPy)/Graphene (GN) was synthesized by in-situ polymerization in different weight percentages (0.1, 0.3, 0.5, 1, 3 and 5 wt.% (g)) of GN nano particles using chemical oxidation method at room temperature. The FTIR, SEM and electrical properties were studies for the nano composites. The result show that when concentration of GN Nano particle increase, the electrical conductivity increased and the graphene sheets were merging to form a continuous area of the GN through the polypyrrole base material. The FTIR spectra shows that the characteristics absorption peaks of polypyrrole that is, 1546.80, 1463.87 and 3400.27 cm-1(stretching vibration in the pyrrole ring), and at 1080.06 cm-1 was assigned to C—O stretching and at 1589.23 cm-1 was assigned to C—C vibration of carbon ring in graphene.
 الخلاصة
 حضر البولي بايرول النقي و المطعم بدرجة حرارة الغرفه بطريقة الاكسدة الكيميائية و قد تم استخدام جسيمات الكرافين النانوية و بالنسب التالية (0.1, 0.3, 0.5, 1. 3, ,5 %). و تم استخدام طيف الاشعه تحت الحمراء و ماسح الالكترون المجهري لتشخيص البولي بايرول المحضر كما قيست التوصيلية الكهربائية المستمرة و اوجدت النتائج ان التوصيلية تزداد بزيادة درجه الحرارة و كذالك بزيادة الكرافين .
Highlights
IntroductionThe development of conductive polymers has given a new dimension to the present time
The FTIR spectra shows that the characteristics absorption peaks of polypyrrole that is,1546.80, 1463.87 and 3400.27 cm-1, and at 1080.06 cm-1 was assigned to C—O stretching and at 1589.23 cm-1 was assigned to C—C vibration of carbon ring in graphene
The characteristic bands of PPy and GN are observed for the nanocomposites but, it has a shift in the peaks because of the interaction between the PPy and GN surface, Fig
Summary
The development of conductive polymers has given a new dimension to the present time. Conducting polymers are...a possible class of new materials that combine solubility, processability and flexibility of plastics with electrical and optical properties of metals and semiconductors [1]. In addition to being corrosion resistant and lightweight, many critical properties of conducting polymers may be designed for different applications. The strength to weight, possibility, resistance to corrosion, has given conducting polymers advantage over metals [3] Conducting polymers are made up of carbon and hydrogen, along with hetero atoms such as nitrogen or Sulphur [4]. All conducting polymers have π-conjugation across the polymer backbone; typical conducting polymers include polyaniline (PANI), polypyrrole (PPy), polythiophene and polyacetylene.
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