Definitions of basic terms relating to polymer liquid crystals (IUPAC Recommendations 2001)

The document first gives definitions of basic terms related to liquid-crystalline and mesomorphic states of matter and then terms specific to the classification of liquid-crystal polymers. The terms have been restricted to those most commonly encountered in the structural description of the latter class of materials. The terms have been selected from the recently published comprehensive document "Definitions of basic terms relating to low-molar-mass and polymer liquid crystals" [Pure and Applied Chemistry 73 (5), 845-895 (2001)] and are intended to form a readily usable guide for the reader interested in the structural description of polymer liquid crystals. The more comprehensive document should be used for terminology associated with types of mesophases and the optical and physical characteristics of liquid-crystalline materials. The advice given by representatives of the International Liquid Crystal Society for the preparation of this document is gratefully acknowledged.Fil:Barón, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina

Opportunities and protocol for the teaching of materials science in Africa

During the last 30 years the world's materials around us have changed from - steel, concrete and wood to new materials with their own chemistry, and they constitute a large part of the manufacturing industry and our imports. Emphasis is on polymers, advanced materials for the electronic and medical industries and novel ceramics, amongst others. Yet, a school leaver often doesn't know much, or anything, about steel, concrete or what a plastic bag is and how to recycle it. There is an urgent need to address the improved teaching of materials science, especially in Africa [1, 2]. The NSF in America funded the Materials Science Department at Iowa University to create standards eight, nine and ten, i.e. senior high school, material science course. Sixteen teachers were used to write the notes and teachers manual. We are looking at the use of this course to promote materials science as a third matric science subject. We are of the opinion that this course could do much to improve science teaching in Africa and make the matric student much more conscious of materials around him/her. This presentation (which in some form had been presented at various conferences) mentions what this course in materials science and macromolecules covers and, further what we can do and achieve with multimedia education at university level [3, 4, 5, 6, 7, 8]. It will be based on the courses: MATTER, from Chapman-Hall, developed by Liverpool University and Macrogalleria, developed by Prof. Lon Mathias at University of Southern Mississippi.Conference Pape

Definitions of basic terms relating to polymer liquid crystals (IUPAC Recommendations 2001)

The document first gives definitions of basic terms related to liquid-crystalline and mesomorphic states of matter and then terms specific to the classification of liquid-crystal polymers. The terms have been restricted to those most commonly encountered in the structural description of the latter class of materials. The terms have been selected from the recently published comprehensive document "Definitions of basic terms relating to low-molar-mass and polymer liquid crystals" [Pure and Applied Chemistry 73 (5), 845-895 (2001)] and are intended to form a readily usable guide for the reader interested in the structural description of polymer liquid crystals. The more comprehensive document should be used for terminology associated with types of mesophases and the optical and physical characteristics of liquid-crystalline materials. The advice given by representatives of the International Liquid Crystal Society for the preparation of this document is gratefully acknowledged.Fil:Barón, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina