Self-reinforced composites involving

Isayev, A. (1996) Self-reinforced composites involving liquid-crystalline polymers Overview of development and applications, in Liquid-Crystalline Polymer Systems Technological Advances, (eds A.I. Isayev, T. Kyu and S.Z.D. Cheng) ACS Symposium Series 632, American Chemical Society, Washington, DC, pp. 1-20. 

Self-Reinforced Composites Involving Liquid-Crystalline Polymers Overview of Development and Applications... 

ISAYEV Self-Reinforced Composites Involving LCPs... 

RPs that combine two different materials (plastic matrix and reinforcement) are a separate major and important segment in the plastic industry. They are also called plastic composites and composites. There are also self-reinforcing plastics such as liquid crystal polymers (Chapter 1) and others.301 It is a fact that RPs have not come near to realizing their great potential in a multitude of applications usually due to cost limitations that particularly involves the use of expensive fiber reinforcements (carbon, graphite, silica, etc.).1 Information on thermoplastic and thermoset plastic RPs are reviewed in Chapter 15. 

The partial dissolution process involves the processing of "self-reinforced" or "all-cellulose" composites in which both filler and matrix are cellulosic forms [6]. For CNCs-reinforced cellulose 11 (regenerated cellulose) composites, this process involves the fabrication of neat CNCs film and subsequent partial dissolution (for a set time) of neat CNCs film in a N,N-dimethylacetamide (DMAc) solution for the formation of cellulose 11, followed by immersion (for a set time) in lithium chloride/DMAc solution to selectively dissolve the surfaces of CNCs. Finally, rinsing of partially dissolved film was performed to remove DMAc, and initiation of precipitation of cellulose 11, followed by drying and compression molding. However, these particular "all-cellulose" composites have been prepared by using solution-casting of a suspension mixture of CNCs within a medium of dissolved cellulose [175]. 

Ramakrishnan et al. [19] discussed the effect of block copolymer nano-reinforcements on the low-velocity impact response of sandwich structures. They employed an instrumented drop tower setup for the low-velocity impact tests of the sandwich plates with neat and nano-reinforced epoxy matrix, at different energies. They identified the macroscopic response of the sandwich structure and the microscopic phenomena involved in dissipating the impact energy and compared it for the sandwich plates with (and without) nanoparticles. They evaluated the dynamic response of sandwich composites based on Kevlar fiber reinforced epoxy and Rohacell foam and reported an improvement in impact performance with these sandwich structures that was achieved by the addition of nanoparticles to the resin matrix. In their work an acrylate triblock copolymer that self-assembles in the nanometer scale, called Nanostrength, was added to the epoxy matrix. The effect of the nano-reinforcements on flat sandwich plates undergoing low-velocity impact was investigated at different scales. 

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