Crystallization behavior of poly(butylene succinate)/corn starch biodegradable composite

Abstract

ABSTRACT:The effects of corn starch (CS) filler and lysine diisocyanate (LDI) as a coupling agent on the crystallization behavior of a poly(butylene succinate) (PBS)/CS ecocomposite were investigated using differential scanning calorimetry. In isothermal crystallization, n values for pure PBS were from 2.33 to 2.82. On the other hand, both composites showed values of 3 Ͻ n Ͻ 4. In nonisothermal crystallization, the Avrami exponent varied from 2.12 to 2.55 for pure PBS, from 1.58 to 1.96 for the composite without LDI, and from 1.79 to 1.91 for the composite with LDI, depending on the cooling rate. There was not a large difference of the crystallization rate constant (k) as adjusted by the Jeziornay suggestion. The activation energy for nonisothermal crystallization was also calculated on the basis of three different equations (Augis-Bennett, Kissinger, and Takhor equations). However, the values of the activation energy were in contradiction with the results of the kinetics. The addition of the filler (CS) and coupling agent (LDI) affected the morphological structure of PBS spherulites.

Structure and properties of poly(butylene succinate) filled with lignin: A case of lignosulfonate

“…With the purpose of improving the performance and reducing the cost of PBS-based materials, cellulose acetate, 11 soy protein, 12 corn starch, 13,14 chitosan, 15 layered silicate, 3,16 organoclay, 17 attapulgite, 18 carbon nanotubes, 19 poly(lactic acid), 20 and poly (ethylene oxide) 21 have been introduced to modify the PBS plastics.…”

Biodegradable Poly(butylene succinate) Composites Reinforced by Cotton Fiber with Silane Coupling Agent

“…Recently, the use of natural biodegradable fibers as alternative reinforcing fillers in composite materials have increasingly been gaining attention owing to their advantages over artificial fibers such as carbon, glass, and aramid [2]. To date, rice straw [3], abaca fiber [4], kenaf fiber [5], jute fiber [6], alkaline lignin [7], bamboo fiber [8], water bamboo husk [9] wood flour [10] and starch [11,12] have been used as natural fillers to enhance the properties of PBS and reduce the cost.…”

A Review on Biodegradable Polymeric Materials Striving Towards the Attainment of Green Environment

“…They possess specific advantages such as low water absorption, low green-house gas emissions, low use of petroleum resources, low toxicing, useful ranges of specific strength and modulus. They also have potential ability to completely degrade in soil through the action of microorganisms (anaerobic) [10,11] or by composting (aerobic) process [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] and they offer a possible alternative to traditional non-biodegradable polymers where recycling is unpractical or not economical [7].…”