AVIENT CORPORATION



Instrument of Substitution of Attorney-in-Fact



            KNOW ALL BY THESE PRESENTS, that the undersigned, as
attorney-in-fact under a duly authorized and executed Power of Attorney filed
with the U.S. Securities and Exchange Commission (the ?SEC?) on August 6, 2021
(the ?Power of Attorney?) for Neil Green (the ?Insider?), hereby constitutes
and appoints (pursuant to the substitution authority granted to the undersigned
pursuant to such Power of Attorney (the ?Substitution Authority?)) each of
Jamie A. Beggs, Kristen A. Gajewski, Robert K. James, and Lorraine E. Gaulding,
signing individually, as a true and lawful attorney-in-fact for the Insider,
and as a substitute for the undersigned, to: 1. Prepare, execute in the
Insider?s name and on the Insider?s behalf, and submit to the SEC a Form ID,
including amendments thereto, and any other documents necessary or appropriate
to obtain codes and passwords enabling the undersigned to make electronic
filings with the SEC of reports required by Section 16(a) of the Securities
Exchange Act of 1934 or any rule or regulation of the SEC; and 2. Execute for
and on behalf of the Insider, in the Insider?s capacity as an officer and/or
director of Avient Corporation (the ?Corporation?), Forms 3, 4, and 5 in
accordance with Section 16(a) of the Securities Exchange Act of 1934 and the
rules and regulations thereunder; and 3. Do and perform any and all acts for
and on behalf of the Insider which may be necessary or desirable to complete
and execute any such Form 3, 4, or 5 and timely file such form with the SEC and
any stock exchange or similar authority; and 4. Take any other action of any
type whatsoever in connection with the foregoing which, in the opinion of such
attorney-in-fact, may be of benefit to, in the best interest of, or legally
required by, the Insider, it being understood that the documents executed by
such attorney-in-fact on behalf of the Insider pursuant to the Power of
Attorney and this Instrument of Substitution of Attorney-in-Fact shall be in
such form and shall contain such terms and conditions as such attorney-in-fact
may approve in such attorney-in-fact?s discretion. The undersigned, pursuant to
the Substitution Authority, hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the rights
and powers granted to the undersigned under the Power of Attorney, as fully to
all intents and purposes as the Insider might or could do if personally
present, with full power of substitution or revocation, hereby ratifying and
confirming all that such attorney-in-fact, or such attorney-in-fact?s
substitute or substitutes, shall lawfully do or cause to be done by virtue of
the Power of Attorney and this Instrument of Substitution of Attorney-in-Fact
(and the rights and powers therein granted). The undersigned acknowledges that
the foregoing attorneys-in-fact, in serving in such capacity pursuant to the
Substitution Authority, are not assuming, nor is the Corporation assuming, any
of the Insider?s responsibility to comply with Section 16 of the Securities
Exchange Act of 1934. This Instrument of Substitution of Attorney-in-Fact shall
remain in full force and effect until the Insider is no longer required to file
Forms 3, 4, and 5 with respect to the Insider?s holdings of and transactions in
securities issued by the Corporation, unless earlier revoked by the Insider in
a signed writing delivered to the foregoing attorneys-in-fact. IN WITNESS
WHEREOF, the undersigned has caused this Instrument of Substitution of
Attorney-in-Fact to be executed as of this 24th day of January 2024. /s/ Lisa
K. Kunkle Lisa K. Kunkle, attorney-in-fact for Insider