The TGA curve for Proallium® showed

The TGA curve for Proallium® showed a first weight loss of
around 80% at temperatures up to 150
C and a second one (the
remaining 20%) at temperature above 350
C. The TGA curve for PLA
film showed just one weight loss in the range 350
Ce450
C.
Considering these values, the weight losses obtained in the TGA
curves for the different PLA films with Proallium® can be clearly
identified. In this sense, the first weight loss at temperatures of
approximately 150
C was related to Proallium® while the second
step at 350
C mainly corresponded to the thermal degradation of
the PLA polymer. Therefore, the TGA thermograms confirmed the
presence of Proallium® in the polymeric matrix after the extrusion
process. The concentrations of Proallium® were calculated from the
weight losses observed in Fig.1 at 150
C divided by 80% (weigh loss
of Proallium® at 150
C) which gave as results approximately 1.3%,
4.4% and 5.1% w/w for formulations with a nominal amount of 2%,
5% and 6.5% w/w, respectively. Therefore, there was a direct relationship
between the nominal content of Proallium® (i.e., the
amount introduced into the extruder) and the actual content
quantified in the films by TGA. Several authors reported that the
losses of essential oils observed were due to volatility during the
development of the active packaging systems (Altiok, Altiok, &
Tihminlioglu, 2010; Ramos et al., 2012). Similarly, in the present
work, the results obtained in the TGA analyses revealed lower
quantities of Proallium® than those added in the production process,
probably due to the volatility of its components as well.

ผลลัพธ์ (ไทย) 1:

The TGA curve for Proallium® showed a first weight loss ofaround 80% at temperatures up to 150
C and a second one (theremaining 20%) at temperature above 350
C. The TGA curve for PLAfilm showed just one weight loss in the range 350
Ce450
C.Considering these values, the weight losses obtained in the TGAcurves for the different PLA films with Proallium® can be clearlyidentified. In this sense, the first weight loss at temperatures ofapproximately 150
C was related to Proallium® while the secondstep at 350
C mainly corresponded to the thermal degradation ofthe PLA polymer. Therefore, the TGA thermograms confirmed thepresence of Proallium® in the polymeric matrix after the extrusionprocess. The concentrations of Proallium® were calculated from theweight losses observed in Fig.1 at 150
C divided by 80% (weigh lossof Proallium® at 150
C) which gave as results approximately 1.3%,4.4% and 5.1% w/w for formulations with a nominal amount of 2%,5% and 6.5% w/w, respectively. Therefore, there was a direct relationshipbetween the nominal content of Proallium® (i.e., theamount introduced into the extruder) and the actual contentquantified in the films by TGA. Several authors reported that thelosses of essential oils observed were due to volatility during thedevelopment of the active packaging systems (Altiok, Altiok, &Tihminlioglu, 2010; Ramos et al., 2012). Similarly, in the presentงาน ผลได้รับในวิเคราะห์ TGA เปิดเผยล่างปริมาณของ Proallium ®กว่าในกระบวนการผลิตอาจเนื่องจากความผันผวนของประกอบด้วย

ผลลัพธ์ (ไทย) 3:

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