✓ successive attachment lower oxyethylene units (n?=?2-3) to a "homogeneous" hydrocarbon chain [28]; ✓ purification and subsequent attachment of oxyethylene units (n?=?3) to the "homogeneous" hydrocarbon chain [29].
Greater amount of oxyethylene groups, for instance, implies significant aqueous solubility.
The presence of tri(oxyethylene) side chains decreased the crystallinity of oxyethylene segments, i.e., TECs with higher side chain content showed lower crystallinity.
The crystallite size of oxyethylene units in TEC films did not change, but the amorphous phase content became higher by the introduction of tri(oxyethylene) side chains.
Samples with n≥3 (where n is the molar ratio of oxyethylene moieties per Na+ ion) were examined.
Regardless of the copolymer composition, fraction of oxyethylene units in the crystalline PEO phase was similar in all investigated systems.
Therefore, it may seem surprising that the anti-PEG antibodies display so much higher affinities for the small group at the end of the polymer than for the large number of oxyethylene units (CH2 CH2 O) within the polymer backbone (c. 227 for 10 kDa PEGs).
Direct determination of the discrete distribution for crystalline lamellar thickness has been performed for poly d,l-lactic acid)/poly(oxyethylene) (PDLLA/PEG) blends by conducting small-angle X-ray SAXStering (SAXS) measurements using synchrotron radiation.
The determination of it is gruesome.
The determination of rescue workers.
