Capped polyether macromonomers APES10 and APEC10 were synthesized from allyl polyethylene glycol sole ether APEO10

and their polycarboxylic acid type copolymers AA/APES10

AA/APEC10 as antiscalants were prepared from small molecule monomers acrylic acid AA.The products were characterized by FT-IR and 1H NMR and the performance of their copolymers of calcium phosphate inhibition was evaluated by the static scale-inhibiting method.The studies indicated that when mass ratio of APES10 to AA was 1:1

APEC10 to AA was 2:3

both AA/APEC10 and AA/APES10 had much better ability to inhibit the precipitation of calcium phosphate than other mass ratios.It was also shown that both AA/APEC10 and AA/APES10 had superior ability to inhibit the precipitation of calcium phosphate when the dosage was 6 mg·L-1

approximately showing 100%

92% inhibition

respectively. While compared to that of AA/APES10

AA/APEC10 had superior ability to control calcium-phosphate deposition.Furthermore

the synthesized AA/APEC10 is an environmentally friendly antiscalant

only containing four elements of carbon (C)

hydrogen (H)

oxygen (O)

sodium (Na)

without phosphorous (P)and nitrogen (N).AA/APEC10 is an excellent performance non-phosphorus inhibitor for calcium phosphate scaling in industrial recycling water systems.