Effects of nano-/micro-sized additives on the crystallization behaviors of PLA and PLA/CO2 mixtures

Non-isothermal crystallization behaviors of poly(lactic acid)/cellulose nanofiber composites in the presence of CO2

“…It has also been widely used in biomedical applications due to its biodegradability and biocompatibility [4,6]. Nevertheless, the brittleness, slow crystallization rate, and low glass transition temperature of PLA limit its usages [1,2,7,8]. Enhancing the crystallization rate and developing higher crystallinity in PLA can improve its mechanical strength and service temperature, thereby broadening its applications [2,[7][8][9][10][11].…”

“…Different strategies have been employed to enhance the crystallization kinetics of PLA including chain branching [12][13][14][15], iso-/non-iso-thermal treatment under plasticizing gas environments at elevated pressures [8,12,16,17], polymer blending [18][19][20][21][22], incorporation of inorganic/organic fillers or nucleating agents [8,21,[23][24][25][26][27][28][29][30], and strain-induced crystallization [31][32][33]. Among these, adding inorganic/organic fillers or nucleating agents has been considered one of the most common and effective approaches.…”

Expanded polylactide bead foaming - A new technology

“…However, we have extensively investigated how the PLA's crystallization kinetics can be enhanced under atmospheric condition and in the presence of dissolved gas by varying branching degree [8][9][10], by adding nano-/micro-sized additives [11], and PLA with varying D-lactide content [12].…”

Effect of processing conditions on the cell morphology distribution in foamed injection molded PLA samples

“…However, its applications are limited in many manufacturing processes because of the low melt strength, the narrow processing window and the slow crystallization rate [1][2][3][4][5][6][7]. Supercritical nitrogen utilized in the foam injection molding process reduces the melt viscosity due to its plasticization effect, allowing the processability of the PLA at decreased pressure and temperatures [8,9]. A strong interconnection exists between the foaming and the crystallinity.…”