Effect of the Presence of an Ester of Montanic Acids With Multifunctional Alcohols in the Composites of Titanium Dioxide Nanoparticles With Poly (Ethylene Terephthalate) in Their Non-Isothermal Crystallization

Abstract

The effect of the addition of an ester of montanic acid with multifunctional alcohols in the effectiveness of the dispersion and compatibility of TiO 2 nanoparticles when included as filler in poly(ethyleneterephthalate) for composite production is studied through the study of the non-isothermal crystallization behaviour by differential scanning calorimetry (DSC). The application of the Avrami method enables to evaluate the compatibility and the level of dispersion/aggregation of the nanofiller in the poly (ethyleneterephthalate) by the analysis of the temperature and enthalpy of crystallization, the kinetic parameters and the half-crystallization time.

The Influence of Titanium Dioxide (TiO2) Particle Size and Crystalline Form on the Microstructure and UV Protection Factor of Polyester Substrates

“…In terms of particle size, micro-sized particles had a greater protective effect than their nano-sized counterparts. The primary reason for the enhanced UV radiation protection provided by the rutile structure, in comparison to anatase, lies in the narrower band gap exhibited by rutile as opposed to anatase [ 25 ] and, as a result, rutile has a greater degree of electron–hole recombination. For this reason, the rutile phase is more suitable to be used as a UV blocker since the narrower the band, the better the behavior for blocking UV radiation ( Figure 5 ).…”

“…The dispersing agent used was LICOWAX E (Clariant)( (Sant Joan Despí, Spain), an ester of montanic acids with multifunctional alcohols (MAWMA), which was found to be suitable for dispersing TiO 2 particles in a PET matrix in a previous work ( Table 2 ) [ 24 , 25 ].…”

“…The characteristics of the particles, as provided by the manufacturers [19][20][21][22], are shown in Table 1 and TEM images are available in a previous work [23]. The dispersing agent used was LICOWAX E (Clariant)( (Sant Joan Despí, Spain), an ester of montanic acids with multifunctional alcohols (MAWMA), which was found to be suitable for dispersing TiO 2 particles in a PET matrix in a previous work (Table 2) [24,25]. Partially oriented yarns (POY) of PET multifilament (48 filaments) containing TiO 2 particles were manufactured by IQAP Masterbatch Group S.L.…”

The Effect of Accelerated Aging on the Molecular Weight and Thermal and Mechanical Properties of Polyester Yarns Containing Ceramic Particles

“…In this context, in previous studies carried out by the research team, the effect of the inclusion of nano and microparticles of TiO 2 , SiC, and CaF 2 on the physical and chemical properties of polyethylene terephthalate (PET) has been analyzed. These results have made it possible to determine the most suitable processing conditions and dispersant for obtaining the PET multifilament yarns used in this work [ 14 , 15 , 16 , 17 , 18 , 19 , 20 ].…”

Obtaining of a PET/SiC hybrid multifilament: Non-isothermal crystallization studies

“…In this context, studies of the inclusion of ceramic nanoparticles of titanium dioxide (TiO 2 ) and calcium fluoride (CaF 2 ) as fillers in a matrix of poly(ethylene terephthalate) (PET) were previously developed by the research group (Cayuela et al, 2016;Manich et al, 2015;Riba-Moliner et al, 2020). In those studies, the use of three additives as dispersing agents was tested.…”