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Multicompartment polymeric micelles (MPMs) have attracted broad interest, due to their intriguing advantages. Although a plethora of MPMs have been designed recently, characterization of the fine hierarchical compartmented structure and dynamic conformation change of MPMs are still challenging. In this contribution, we reported a strategy to detect thermo-induced structure rearrangement of one kind...
A synergistic effect on flame retardancy was found when acrylonitrile butadiene ultra-fine fully vulcanized powdered rubber (NB-UFPR) was incorporated into ethylene vinyl acetate/nano-magnesium hydroxide (EVA/nano-MH) composite by a new process. The fire performance of EVA and EVA composites was compared in this communication by cone calorimeter test (CCT). The CCT data indicated that the addition...
A novel flame retardant, silicone elastomeric nanoparticle (S-ENP) with T g of −120°C and particle size of ∼100nm has been developed and used as a modifier for polyamide 6 (nylon-6). It has been found that S-ENP can not only increase the toughness and improve the flame retardancy of nylon-6 but also helps unmodified clay exfoliate in nylon-6 matrix. It has been also found that the S-ENP and...
A new type of rigid PVC compound with higher toughness and higher heat resistance was prepared by using a new type of PVC modifier, ultrafine full-vulcanized powdered rubber (UFPR). The UFPRs used in this paper were butadiene nitrile UFPR-1 (NBR-UFPR-1) with particle size of about 150nm and butadiene nitrile UFPR-2 (NBR-UFPR-2) with particle size of about 90nm. Dynamic mechanical thermal analysis...
A new type of phenolic resin nano-composite, with excellent impact strength, flexural strength and heat resistance, is introduced in this paper. The phenolic resin is modified with organic elastomeric nanoparticles including nitrile butadiene and carboxylic nitrile butadiene rubbers. TEM images show that the elastomeric nanoparticles are uniformly dispersed in phenolic matrix with a diameter of about...
The crystallization behavior of nylon-6 confined in a hybrid of nylon-6 and ultra-fine full-vulcanized powdered rubber was studied. It is found that carboxylic styrene-butadiene ultra-fine full-vulcanized powdered rubber (CSB-UFPR) could behave as a nucleating agent for nylon-6 crystallization, which can increase the crystallization temperature, the onset temperature of crystallization as well as...
A combined rubber system of ultrafine full-vulcanized powdered rubber (UFPR) and SBS was used for polypropylene toughening. The PP toughened with the combined rubber system shows not only higher impact strength as compared to each rubber component used alone but also good stiffness and heat resistance. Crystallization study shows that the UFPR is more efficient in promoting the crystallization of...
Generally, toughness of polypropylene (PP) is an issue which has been investigated for many years to search for improvements. A traditional approach is to blend with rubber particles to enhance the toughness of PP yet modulus of PP decreases accordingly. Recently, we have achieved a good balance of toughness and stiffness of PP via blending PP with a small amount of elastomeric nano[hyphen]particles...
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