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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Acta Biomater. 2009 Dec 24;6(6):1931–1937. doi: 10.1016/j.actbio.2009.12.012

Table 2.

Characterization, and thermal properties of, poly[bis(ethyl alanato)phosphazene] [PNEA], poly[(50%ethyl alanato) (50%methylphenoxy)phosphazene] [PNEA50mPh50], and poly[(50%ethyl alanato) (50%phenylphenoxy)phosphazene] [PNEA50PhPh50] and poly[(85%lactic acid)(15%glycolic acid)] [85:15 PLAGA].

Polymer Structure NMR (ppm) Mw (g/mol) Tg (°C) XPS (%)
31P 1H
PNEA graphic file with name nihms171037t1.jpg −1.10 4.4 (1H) 408,000 −3.0 C 56.1
4.1 (2H) O 26.2
1.6 (3H) N 12.4
1.3 (3H) P 5.3
PNEA50mPh50 graphic file with name nihms171037t2.jpg −5.07 6.8 (4H ) 4,608,000 −6.0 C 63.2
3.9 (3H) O 22.3
2.2 (3H) N 9.2
1.8 (3H) P 5.2
PNEA50PhPh50 graphic file with name nihms171037t3.jpg 1.78 7.4 (9H) 4,350,000 35.2 C 67.0
−5.12 4.4 (1H) O 26.8
−14.58 4.1 (2H) N 4.1
1.4 (3H)
1.2 (3H)		 P 2.0
PLAGA graphic file with name nihms171037t4.jpg – – 1,35,000 65.0 –