Development of degradable polymer composites from starch and poly(ethyl cyanoacrylate)

Abstract

This report describes the development of degradable polymer composites, which can be made at room temperature without special equipment. The developed composites are made from poly(ethyl cyanoacrylate) and starch. Ethyl cyanoacrylate monomers are mixed with starch and the polymerization reaction of these monomers was initiated by dissociated OH‐ ions from moisture on the surface of the starch. After the polymerization, the body of starch granules acts as filler and the micrometer‐scale gaps formed by starch granules are filled with the poly(ethyl cyanoacrylate). The glass transition temperature of the composite matrix ranges from 106°C to 113°C and thermal degradation begins around 160°C. The polymer composites produced by this procedure contain 50–64 wt% of starch and have compressive strengths of 80 (±10) MPa. Optimum starch composition for these composites is ∼60 wt%. POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers

Highly Transparent Polyethylcyanoacrylates from Approved Eco-Friendly Fragrance Materials Demonstrating Excellent Fog-Harvesting and Anti-Wear Properties

“…The first degradation starts at ∼160 °C, which corresponds to the degradation of hard segments in cyanoacrylate and the formation of cyanates, primary or secondary amines, olefins, and carbon dioxide. The second-step degradation is associated with soft segment degradation (160–250 °C), in agreement with the literature. , There is no residue remaining beyond 390 °C. Benzyl alcohol, however, due to its polymerization inhibitive effect, causes PECA to degrade earlier at around 225 °C.…”

“…The second-step degradation is associated with soft segment degradation (160−250 °C), in agreement with the literature. 55,56 There is no residue remaining beyond 390 °C. Benzyl alcohol, however, due to its polymerization inhibitive effect, causes PECA to degrade earlier at around 225 °C.…”

Starch‐based biocomposite films reinforced with cellulose nanocrystals from garlic stalks

“…These include polyhydroxyalkanoates obtained by microbial production; poly(lactic acid) chemically synthesized from monomers derived from agroresources; polyesters produced by chemical synthetic routes from conventionally synthesized monomers; and starch, a polysaccharide obtained from biomass by fractionation. Among these biopolymers, starch offers the advantages of being cheap and naturally abundant . Starch is plasticized by thermomechanical treatment in the presence of water and a plasticizer like glycerol to produce thermoplastic starch.…”

Swelling and Shrinking Behavior of Modified Starch Biopolymer with Iron Oxide

“…[16] For improving the properties, [17][18][19] of the starch polymer, [20] starch can be mixed with various synthetics, [21,22] and natural polymers [23] such as multilayer structures, [24,25] with aliphatic polyesters, chitosan, blends with natural rubber and composites with fibers. [26,27] The modified properties of biopolymer [28][29][30][31][32] can be utilized in different applications such as polymer electrolytes for lithium batteries, [33] electronic applications, [34,35] as a membranes for separation, as a catalysis, lab-on-chip technologies, stimuli-responsive shape memory polymer, [36] biomedical application, [37,38] orthopedic surgery, [39] tissue engineering, and 3D printed scaffolds for bone tissue regeneration. [40] The biopolymer based design can be inspired from mussel-inspired crosslinking, [41] microporous shape memory polymers, [42] biomaterials science and engineering.…”