PENGUKURAN BERAT MOLEKUL POLIMER BERBASIS KOMPUTER

• Main Author: Anggaravidya, Mahendra
• Format: Theses
• Language: Indonesia
• Subjects: Fisika
• Online Access: https://digilib.itb.ac.id/gdl/view/4592
• Institution: Institut Teknologi Bandung

<b>Abstract:<p align=\"justify\"> <br /> Many specialities of polymer cause polymers use wider in a y fields. One of the speciality is the polymer molecular weight, which properties as polymer such as solubility and viscosity influenced by that.<p align=\"justify\"> <br /> Several methods to measure polymer molecular weight has been developed, like osmometry, light scattering, cryoscopy, ebulliometry and tonometry methods.<p align=\"justify\"> <br /> To measure polymer molecular weight, the tonometry method has used in this research. The principal of this methods is measure polymer molecular weight due to the resistivity changes. According this method, a tool for measure polymer molecular weight has projected and builds.<p align=\"justify\"> <br /> To measure polymer molecular weight, polymer liquid sample placed on measure room with constant temperature. This sample is series connected with a resistor, voltage source applied and then the potential different was measured on many different concentration.<p align=\"justify\"> <br /> For each polymer concentration, resistivity number measured and this number show on a curve and extrapolated for number of polymer concentration equals zero [C]o.<p align=\"justify\"> <br /> The measurement of potential different, temperature control and data accusition helped by computer trough ADC-DAC interface 12 bit with 16 input and 1 output. The software to be used for data accusition is Borland delphi language.