Thermal Stabilization of Polyoxymethylene by PEG-Functionalized Hydroxyapatite: Examining the Effects of Reduced Formaldehyde Release and Enhanced Bioactivity

Table 2

Crystallinity [[%]] and crystal size [ [nm]] of HA and HA-g-PEG systems based on XRD characterization (β—the peak width at half height [rad]).

Sample	[%]	β [rad]	2θ [rad]	(002) [nm]
HA	87.35	0.0040	0.4503	35.43
HA-g-PEG 600	76.57	0.0035	0.4527	40.76
HA-g-PEG 2000	84.51	0.0030	0.4521	47.95
HA-g-PEG 6000	71.87	0.0037	0.4506	38.44