Evaluation of crystallinity, thermal, mechanical and morphological features of high density polyethylene composites reinforced with crosslinked semifluorinated acrylate polymer microspheres

Yükleniyor...
Küçük Resim

Tarih

2023

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

SAGE Publications Ltd

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

This study mainly aims both to prepare well-shaped crosslinked 3,3,4,4,5,5,6,6,7,7,8,8,8 tridecafluorooctyl-4-(acrloyloxy) benzoate (ABCF13) polymer microspheres and to investigate the influences of the prepared microspheres addition on the crystallinity, thermal, mechanical and morphological features of high density polyethylene (HDPE). The suspension polymerization method was used for the production of well-defined microspheres and, the content of the microspheres varied from 1.0% to 10.0% in the composites. The characterization of crosslinked poly(ABCF13) microsphere-loaded HDPE composites were performed via powder X-ray diffraction, differential scanning calorimeter, universal mechanical (tensile and impact) testers and scanning electron microscope (SEM) techniques. According to the experimental findings, a and b unit cell parameters increased initially and reached maxima with the sample including 5.0% microsphere, which were followed by dramatic decreases, while c parameter remained relatively unchanged. Thermal analysis also showed that the melting temperature of HDPE reduced with the initial loading of the microspheres, then stayed at a plateau value of about 129 degrees C due to the formation of lattice distortions, generation of microstructural disorders and the defects in the crystal structures. The mechanical test results revealed that there existed considerable improvements in tensile strength, modulus and impact strength. The maximum tensile strength 25.66 MPa, elastic modulus 499.30 MPa and maximum absorbed energy in the impact test 26.84 kJ/m(2) (29%, 42% and 41% improvement, respectively) were achieved with the blend involving 5.0% microsphere. After the maxima, the mechanical characters depicted weakening trend as the microsphere content increased in the matrix. The SEM analyses revealed that although there existed fibrillar formations in all samples, the extensions decreased with the increase of the microsphere content. While ductile behavior was observed with the formation of long-bulky extensions at low contents, brittleness started to prevail at high contents with some short and thin fibrils.

Açıklama

This research was supported by BAIBU research fund grant no. BAP-2016.03.03.1075. The authors sincerely thank to Prof. Dr. T. Tincer for providing his laboratory for the mechanical tests and Prof. Dr. A. Varilci for XRD measurements. Moreover, authors are especially grateful to Innovative Food Technologies Development Application and Research Center (YENIGIDAM) for the DSC measurements.

Anahtar Kelimeler

High Density Polyethylene, Crosslinked Semifluorinated Microsphere, Crystal Structure, Side-Chain LCP, Free-Volume, Behavior

Kaynak

Journal of Thermoplastic Composite Materia

WoS Q Değeri

Q2

Scopus Q Değeri

Q2

Cilt

36

Sayı

3

Künye

Soykan, U., & Cetin, S. (2023). Evaluation of crystallinity, thermal, mechanical and morphological features of high density polyethylene composites reinforced with crosslinked semifluorinated acrylate polymer microspheres. Journal of Thermoplastic Composite Materials, 36(3), 1243-1263.