T g	Glass transition temperature, °C
T m	Degradation temperature, °C
GHC	Greenhouse gas
SEM	Scanning electron microscopy
X C	Relative crystalline degree, dimensionless
I C	Intensity of crystalline region, dimensionless
I A	Intensity of amorphous region, dimensionless
FTIR	Fourier-transform infrared spectroscopy
A b	Absorbance, dimensionless
T y	Transmittance (%)
RH	Relative humidity, %
WVTR	Water vapor transmission rate, g/m2h
WVP	Water vapor permeability, gm/m2hPa
M	Weight gain of beaker, g
t	Time when the change is less than 0.01 g, h
A	Effective area of film, m2
T	Thickness of film, m
P	Saturation vapor pressure of water, Pa
R 1	Relative humidity value in beaker
R 2	Relative humidity value in desiccator
GTR	Gas transmission rate, 10−6 m3/m2hPa
N2O	Nitrous oxide
CH4	Methane
XRD	X-ray diffraction
DSC	Differential scanning calorimeter