Poly[(tetramethylene terephthalate)

Poly[(tetramethylene terephthalate)

Poly(butylene terephthalate)

NAMES AND IDENTIFIERS OF POLYMER

POLYMER CLASS	Polyesters
COMMON NAMES	Poly[(tetramethylene terephthalate), Poly(1,4-butylene terephthalate), Poly[(butane-1,4-diol)-alt-(terephthalic acid)]
STRUCTURE BASED NAME	Poly(oxybutane-1,4-diyloxyterephthaloyl), Poly(oxytetramethyleneoxyterephthaloyl)
ACRONYMS	PBT
CAS #	24968-12-5
CurlySMILES	O{-}C(=O)c1ccc(cc1)C(=O)OCCCC{n+}

IDENTIFIERS OF MONOMER(S)

CAS #	60088-54-2.110-63-4
COMMON NAMES	Terephthalic acid + 1,4-Butanediol
SMILES	OC(=O)c1ccc(cc1)C(=O)O.OCCCCO
Std. InChI	1S/C8H6O4/c9-7(10)5-1-2-6(4-3-5)8(11)12/h1-4H,(H,9,10)(H,11,12).1S/C4H10O2/c5-3-1-2-4-6/h5-6H,1-4H2
Std. InChIKey	KKEYFWRCBNTPAC-UHFFFAOYSA-N.WERYXYBDKMZEQL-UHFFFAOYSA-N
STRUCTURE

Thermo-Physical Properties: Experimental / Literature Data

PROPERTY	UNIT	VALUE / RANGE	PREFERRED
Molar Volume V_m	mL mol^-1	168.1 - 175.5	175.5
Density ρ	g mL^-1	1.26¹ - 1.31	1.26
Solubility Parameter δ	MPa^1/2	22.4
Molar Cohesive Energy E_coh	J mol^-1	87700
Glass Transition Temperature T_g	K	290 - 353	313
Molar Heat Capacity C_p	J (mol K)^-1	268
Entanglement Molecular Weight M_e	g mol^-1
Index of Refraction n	none

Thermo-Physical Properties: Calculated Data

PROPERTY	UNIT	VALUE / RANGE	PREFERRED
Molecular Weight of Repeat unit	g mol^-1	220.22
Van-der-Waals Volume V_vW	mL mol^-1	116.86
Molar Volume V_m	mL mol^-1	167.6 - 178.2	174.0
Density ρ	g mL^-1	1.24 - 1.31	1.27
Solubility Parameter δ	MPa^1/2	20.8 - 21.2	21.0
Molar Cohesive Energy E_coh	J mol^-1	72300 - 79900	76400
Glass Transition Temperature T_g	K	313 - 325	313
Molar Heat Capacity C_p	J (mol K)^-1	265 - 283	274
Entanglement Molecular Weight M_e	g mol^-1	1200 - 2000	1600
Index of Refraction n	none	1.54 - 1.57	1.55

¹Extrapolated data
Last updated: March 12, 2018

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