APUs	amphiphilic aliphatic polyurethanes
BDI	tetramethylene diisocyanate
BDO	1,4-butanediol
BioPUs	biomedical PUs
CL	ε-caprolactone
CYCLOPHO	cyclophosphamide
CS	chitosan
CYS	Cystaminedihydrochloride
CDI	bis(2-isocyanatoethyl) disulfide
DABCO	1,4-diazabicyclo-[2.2.2]-octane
1,4-DAB	1,4-diaminobutane
1,2-DAE	1,2-diaminoethane
1,6-DAH	1,6-diaminohexane
1,8-DAO	1,8-diaminooctane
DBTDL	dibutyltin dilaurate
DBTDO	dibutyltin dioctanate
DEG	diethylene glycol
DDS/DDSs	drug delivery system(s)
DMPA	2,2-bis(hydroxymethyl)propionic acid
DOX	doxorubicin
EG	ethylene glycol
ECG	epigallocatechin gallate
FA	folic acid
5-FU	5-fluorouracil
GG	glycolide
GEF	gefitinib
GSH	glutathione
HDI	hexamethylene diisocyanate
HMDI	dicyclohexylmethane 4,4′-diisocyanate
HEP	bis-1,4-(hydroxyethyl) piperazine
HPEG	hydrazone-ended methoxyl-poly(ethylene glycol)
HPCL	hydrazone-embedded poly(ε-caprolactone) diol
IC/ICs	diisocyanate/diisocyanates
IPDI	isophorone diisocyanate
LA	lactide
LCST	lower critical solution temperature
LDI	L-Lysine diisocyanate ethyl ester
L-LYS	L-lysine
L-LYS-GQA	L-lysine-derivatized gemini quaternary ammonium salts with two primary amine groups
L-LYS-ABA-ABA tripeptide	L-lysine-γ-aminobutyric acid-γ-aminobutyric acid tripeptide
mPEG	methoxyl-poly(ethylene glycol)
MDEA	N-methyl-diethanolamine
MDI	4,4′-methylenebis(phenyl isocyanate)
EG	ethylene glycol
METX	Methotrexate
bis-MPA	2,2-bis(hydroxymethyl)-propionic acid
NP	nanoparticles
O-DTT	trans-4,5-dihydroxy-1,2-dithiane
OEDA	dihydroxy(polyethylene adipate)
PACL	paclitaxel
PBS	phosphate buffered saline
PCL	poly(ε-caprolactone)
PEG-PU(SS)-PEG	polyurethane with disulfide bonds and PEG fragments
PEOtz-OH	poly(2-ethyl-2-oxazoline)
PHBHx	poly(3-hydroxybutyrate-co-3-hydroxyhexanoate)
PLGA	copolymer of lactide and glycolide
PDO	1,3-propanediol
PEG	poly(ethylene glycol)
PLA	polylactide
PLACL	copolymer of lactide and ε-caprolactone
PLA-SS-PLA	PLA with disulfide bonds
PNIPAAm-g-chitosan	poly(N-isopropylacrylamide)-grafted-chitosan
POEUs	poly(ortho ester urethanes)
POx	poly(2-oxazoline)s
PPG	poly(propylene glycol)
PPG-N3	azide-grafted PEG
PPEG	Propargyl-grafted PEG
PPS	poly(1,3-propylene succinate) diols
PTMC	poly(trimethylene carbonate)
PTMC-SS-PTMC	PTMC with disulfide bonds
PTMG	poly(tetramethylene ether) glycol
PUs	polyurethanes
PU-DDSs	polyurethane drug delivery systems
PU-Prodrugs	polyurethane prodrugs
PU-SS-COOH	polyurethane obtained from PEG-1000, PCL-2000, HDI, CYS and DMPA
PU-SS-COOH-NH2	product of condensation reaction between the PU-SS-COOH and 1,6-diaminohexane
ROP	ring-opening polymerization
SnOct2	tin(II) 2-ethylhexanoate
SPION	superparamagnetic iron oxide nanoparticles
TDI	toluene 2,4-diisocyanate
TMC	trimethylene carbonate
TMZ	temozolomide
WPU	waterborne polyurethane dispersions