The degradation behaviors of an amorphous and a semicrystalline PLA (i.e., aPLA and cPLA) with similar molecular weights are compared at elevated temperatures and after being treated under...

Download scientific diagram | FTIR spectra of a aPLA and b cPLA treated in tap and sea water at various temperatures and periods from publication: Thermal and Environmentally Induced Degradation ...

2024年8月1日 · FTIR spectroscopy is a universal and widely used spectral methodology based on atoms vibration and rotation [2].

PLLA has –OH and –COOH groups at its two ends. The 1 H-NMR spectrum of PLLA is shown in Figure 1. The resonance signal at 1.3-1.6 (d, 3H, CH 3 ) is assigned to methyl protons (-CH 3 ) and 5.06–5.15...

2019年10月4日 · Polylactic acid (PLA) is a biodegradable thermoplastic polymer that is presented as a good alternative to petroleum-derived plastics. Some of the major drawbacks of this material are its lack of thermal stability and rapid degradation in large-scale production; thus, special care must be taken during processing.

Agilent provides the complete solution for chemical imaging — the Cary 620 FTIR for micro–imaging and the Large Sample accessory (LS) for macro–imaging.

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APLA, polyactic, acids are found in many commercial packaging products for consumer use. These acids are created by bacteria naturally occurring in nature and can be used to help create end- products that are biodegradable that can help reduce the harmful effects of greenhouse gases. Key Objectives：

We are proud to say that the ALPHA II is the most robust and reliable compact IR spectrometer available. Its RockSolid TM interferometer is wear-free and resistant to shocks and vibrations. Apart from that, it offers an advanced stabilization of the IR source and features a durable diode laser with a life-time >10 years.

FTIR spectra of the HAp/PLA composite, with molar ratios: a=PLA, b= HAp, c = 70/30, d =60/40 and e=50/50. This study focuses on the development of a composite based on polylactic acid (PLA) and...