The effect of microcrystalline cellulose on poly(propylene) crystallization. An investigation of nonisothermal crystallization kinetics

Silva, Tamíris R; Silva, Ingridy D. S.; Andrade, Querem A F; Welen, Renate M R; Medeiros, Eliton S.; Bastos, Yuri L.M.; Rêgo, José Kaio Max Alves do; Santos, Amélia S.F.

doi:10.1088/2053-1591/ab0cd2

Cited by 3 publications

(1 citation statement)

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“…The Pseudo‐Avrami model described considerably well the relative crystallinity throughout the entire crystallization event, that is, in the range from 10% to 80%, and deviations between the theoretical and experimental values were most evident at the beginning and at the end of the process. These deviations are possibly due to nucleation restrictions and spherulite growth during secondary crystallization 49 …”

Section: Resultsmentioning

confidence: 99%

Approaches on PCL/macaíba biocomposites ‐ mechanical, thermal, morphological properties and crystallization kinetics

Siqueira

Luna

Araújo

et al. 2021

Polymers for Advanced Techs

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Biocomposites based on macaíba shell (MS) and Polycaprolactone (PCL) were melting processed in this work; seeking better compatibility between PCL, MS was chemically treated with maleic anhydride (MA) and sodium hydroxide (NaOH), in addition, PCL‐g‐MA was used as compatibilizer. The biocomposites' performance was evaluated through Fourier transform infrared (FTIR), thermogravimetry (TG), contact angle, water absorption, scanning electron microscopy (SEM), the tensile experiments were executed according to ASTM D638 and the nonisothermal crystallization kinetics was performed from differential scanning calorimetry (DSC) scans using Pseudo‐Avrami, Ozawa, and Mo models. Chemical treated and compatibilized biocomposites presented better tensile behavior with no significant changes in the thermal stability. Higher HDT was verified on PCL/MS biocompounds due to the MS hardening effect, whereas higher contact angle and water absorption were computed for PCL/MS most due to new ways origin for the water get in as provided by MS. Related to crystallization kinetics Ozawa as displayed in the Appendix S1 failed to fit PCL/MS kinetics whereas Pseudo‐Avrami and Momay be safely used form processing purposes. Summing up, PCL/MS biocomposites were carefully investigated and gathered information may be promptly used in sundry applications as well as be added to the literature database.

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Section: Resultsmentioning

confidence: 99%