POU2F3

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POU2F3

A gene on chromosome 11q23.3 that encodes a transcription factor which binds to and regulates expression of various genes, such as SPRR2A or CSH1. POU2F3 is expressed in epidermis and keratinocytes.
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The slightly lower [M.sub.n] in PLA-1.5% ZnO in comparison with PLA-1% ZnO can be attributed to the formation of less cross-linked structures in PLA-1.5% ZnO owing to the formation of relatively larger ZnO aggregates with an increase in ZnO content [18].
This observation is particularly associated with the loss in molecular weight in the composite materials along with an increase in molecular chain mobility [26], as the highest MFI was observed in PLA-1.5 % ZnO with lowest [M.sub.w] (Table 2).
The noticeably higher complex viscosity in PLA-0.5% ZnO as compared to that of PLA-1% ZnO and PLA-1.5% ZnO indicates that ZnO nanoparticles interact more efficiently with PLA molecules at this content, and interaction between PLA and ZnO can be declined above this critical content (0.5%) owing to the formation of ZnO agglomerates.
The residual matters of all composite samples were higher than that of pure PLA measured at 600[degrees]C and it was more predominant in PLA-1.5ZnO.
In fact, as SEM images illustrated, PLA-0.5% ZnO possessed a more uniform dispersion pattern as compared with PLA-1% ZnO and PLA-1.5% ZnO, and this in turn can improve the interfacial bounding between PLA and ZnO and consequently stiffer the composite.
However, the higher storage modulus in PLA-1.5% ZnO by 11% as compared to pure PLA confirmed the stiffening effect of ZnO nanoparticles through PLA matrix.
Scanning electron microscopy micrographs of the fractured surface of (a) pure PLA; (b) PLA-0.5% ZnO; (c) PLA-1 % ZnO; and (d) PLA-1.5% ZnO exhibits the formation of ZnO aggregates (shown by arrows) and the approximate size of ZnO through PLA matrix (white scale bar indicates 50 [micro]m).
The T5% values are found to be 334, 333, 330, and 322[degrees]C, whereas rmax appeared at 371, 372, 372, and 369[degrees]C for PLA, PLA-1 CsNP, PLA-3CsNP, and PLA-5CsNP, respectively.
Figure 3b-e are high magnification SEM images at different regions in the PLA-1 wt% MWNT composite shown in Fig.
The storage modulus increases from 26.0 Pa, for PLA-0.5 wt% MWNT to 510.0 Pa, for PLA-1 wt% MWNT while the electrical conductivity increases from 8.7 X [10.sup.-14] S/cm, for PLA-0.5 wt% MWNT to 4.2 X [10.sup.-8] S/cm for PLA-1 wt% MWNT.